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1.
Shao-Yi Chien Bing-Yu Hsieh Yu-Wen Huang Shyh-Yih Ma Liang-Gee Chen 《The Journal of VLSI Signal Processing》2006,42(3):241-255
Video segmentation is a key operation in MPEG-4 content-based coding systems. For real-time applications, hardware implementation
of video segmentation is inevitable. In this paper, we propose a hybrid morphology processing unit architecture for real-time
moving object segmentation systems, where a prior effective moving object segmentation algorithm is implemented. The algorithm
is first mapped to pixel-based operations and morphological operations, which makes the hardware implementation feasible.
Then the high computation load, which is more than 4.2 GOPS, can be overcome with a dedicated morphology engine and a programmable
morphology PE array. In addition, the hardware cost, memory size, and memory bandwidth can be reduced with the partial-result-reuse
concept. This chip is designed with TSMC 0.35 μm 1P4M technology, and can achieve the processing speed of 30 QCIF frames or
7,680 morphological operations per second at 26 MHz. Simulation shows that the proposed hardware architecture is efficient
in both hardware complexity and memory organization. It can be integrated into any content-based video processing and encoding
systems.
Shao-Yi Chien was born in Taipei, Taiwan, R.O.C., in 1977. He received the B.S. and Ph.D. degrees from the Department of Electrical Engineering,
National Taiwan University (NTU), Taipei, in 1999 and 2003, respectively.
During 2003 to 2004, he was a research staff in Quanta Research Institute, Tao Yuan Shien, Taiwan. In 2004, he joined the
Graduate Institute of Electronics Engineering and Department of Electrical Engineering, National Taiwan University, as an
Assistant Professor. His research interests include video segmentation algorithm, intelligent video coding technology, image
processing, computer graphics, and associated VLSI architectures.
Bing-Yu Hsieh was born in Taichung, Taiwan, in 1979. He received the B.S.E.E and M.S.E.E degrees from National Taiwan University (NTU),
Taipei, in 2001 and 2003, respectively. He joined MediaTek, Inc., Hsinchu, Taiwan, in 2003, where he develops integrated circuits
related to multimedia systems and optical storage devices. His research interests include object tracking, video coding, baseband
signal processing, and VLSI design.
Yu-Wen Huang was born in Kaohsiung, Taiwan, in 1978. He received the B.S. degree in electrical engineering and Ph. D. degree in the Graduate
Institute of Electronics Engineering from National Taiwan University (NTU), Taipei, in 2000 and 2004, respectively. He joined
MediaTek, Inc., Hsinchu, Taiwan, in 2004, where he develops integrated circuits related to video coding systems. His research
interests include video segmentation, moving object detection and tracking, intelligent video coding technology, motion estimation,
face detection and recognition, H.264/AVC video coding, and associated VLSI architectures.
Shyh-Yih Ma received the B.S.E.E, M.S.E.E, and Ph.D. degrees from National Taiwan University in 1992, 1994, and 2001, respectively. He
joined Vivotek, Inc., Taipei County, in 2000, where he developed multimedia communication systems on DSPs. His research interests
include video processing algorithm design, algorithm optimization for DSP architecture, and embedded system design.
Liang-Gee Chen was born in Yun-Lin, Taiwan, in 1956. He received the BS, MS, and Ph.D degrees in Electrical Engineering from National Cheng
Kung University, in 1979, 1981, and 1986, respectively.
He was an Instructor (1981–1986), and an Associate Professor (1986–1988) in the the Department of Electrical Engineering,
National Cheng Kung University. In the military service during 1987 and 1988, he was an Associate Professor in the Institute
of Resource Management, Defense Management College. From 1988, he joined the Department of Electrical Engineering, National
Taiwan University. During 1993 to 1994 he was Visiting Consultant of DSP Research Department, AT&T Bell Lab, Murray Hill.
At 1997, he was the visiting scholar of the Department of Electrical Engineering, University, of Washington, Seattle. Currently,
he is Professor of National Taiwan University. From 2004, he is also the Executive Vice President and the General Director
of Electronics Research and Service Organization (ERSO) in the Industrial Technology Research Institute (ITRI). His current
research interests are DSP architecture design, video processor design, and video coding system.
Dr. Chen is a Fellow of IEEE. He is also a member of the honor society Phi Tan Phi. He was the general chairman of the 7th
VLSI Design CAD Symposium. He is also the general chairman of the 1999 IEEE Workshop on Signal Processing Systems: Design
and Implementation. He serves as Associate Editor of IEEE Trans. on Circuits and Systems for Video Technology from June 1996
until now and the Associate Editor of IEEE Trans. on VLSI Systems from January 1999 until now. He was the Associate Editor
of the Journal of Circuits, Systems, and Signal Processing from 1999 until now. He served as the Guest Editor of The Journal
of VLSI Signal Processing Systems for Signal, Image, and Video Technology, November 2001. He is also the Associate Editor
of the IEEE Trans. on Circuits and Systems II: Analog and Digital Signal Processing. From 2002, he is also the Associate Editor
of Proceedings of the IEEE.
Dr. Chen received the Best Paper Award from ROC Computer Society in 1990 and 1994. From 1991 to 1999, he received Long-Term
(Acer) Paper Awards annually. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on Circuits and
Systems in VLSI design track. In 1993, he received the Annual Paper Award of Chinese Engineer Society. In 1996, he received
the Out-standing Research Award from NSC, and the Dragon Excellence Award for Acer. He is elected as the IEEE Circuits and
Systems Distinguished Lecturer from 2001–2002. 相似文献
2.
Chao-Tsung Huang Po-Chih Tseng Liang-Gee Chen 《The Journal of VLSI Signal Processing》2005,40(3):343-353
Based on B-spline factorization, a new category of architectures for Discrete Wavelet Transform (DWT) is proposed in this paper. The B-spline factorization mainly consists of the B-spline part and the distributed part. The former is proposed to be constructed by use of the direct implementation or Pascal implementation. And the latter is the part introducing multipliers and can be implemented with the Type-I or Type-II polyphase decomposition. Since the degree of the distributed part is usually designed as small as possible, the proposed architectures could use fewer multipliers than previous arts, but more adders would be required. However, many adders can be implemented with smaller area and lower speed because only few adders are on the critical path. Three case studies, including the JPEG2000 default (9, 7) filter, the (6, 10) filter, and the (10, 18) filter, are given to demonstrate the efficiency of the proposed architectures.Chao-Tsung Huang was born in Kaohsiung, Taiwan, R.O.C., in 1979. He received the B.S. degree from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., in 2001. He currently is working toward the Ph.D. degree at the Graduate Institute of Electronics Engineering, National Taiwan University. His major research interests include VLSI design and implementation for signal processing systems.Po-Chih Tseng was born in Tao-Yuan, Taiwan in 1977. He received the B.S. degree in Electrical and Control Engineering from National Chiao Tung University in 1999 and the M.S. degree in Electrical Engineering from National Taiwan University in 2001. He currently is pursuing the Ph.D. degree at the Graduate Institute of Electronics Engineering, Department of Electrical Engineering, National Taiwan University. His research interests include VLSI design and implementation for signal processing systems, energy-efficient reconfigurable computing for multimedia systems, and power-aware image and video coding systems.Liang-Gee Chen received the B.S., M.S., and Ph.D. degrees in electrical engineering from National Cheng Kung University, Tainan, Taiwan, R.O.C., in 1979, 1981, and 1986, respectively.In 1988, he joined the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. During 1993–1994, he was a Visiting Consultant in the DSP Research Department, AT&T Bell Labs, Murray Hill, NJ. In 1997, he was a Visiting Scholar of the Department of Electrical Engineering, University of Washington, Seattle. Currently, he is Professor at National Taiwan University, Taipei, Taiwan, R.O.C. His current research interests are DSP architecture design, video processor design, and video coding systems.Dr. Chen has served as an Associate Editor of IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY since 1996, as Associate Editor of the IEEE TRANSACTIONS ON VLSI SYSTEMS since 1999, and as Associate Editor of IEEE TRANSACTIONS CIRCUITS AND SYSTEMS II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of Video Signal Processing Systems. He is also the Associate Editor of the PROCEEDINGS OF THE IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications, During 2001-2002, he served as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi. 相似文献
3.
Yu Cheng Xinhua Ling Lin X. Cai Wei Song Weihua Zhuang Xuemin Shen Alberto Leon-Garcia 《Wireless Networks》2009,15(1):73-86
This paper presents an analytical model for evaluating the statistical multiplexing effect, admission region, and contention
window design in multiclass wireless local area networks (WLANs). We consider distributed medium access control (MAC) which
provisions service differentiation by assigning different contention windows to different classes. Mobile nodes belonging
to different classes may have heterogeneous traffic arrival processes with different quality of service (QoS) requirements.
With bursty input traffic, e.g. on/off sources, our analysis shows that the WLAN admission region under the QoS constraint
can be significantly improved, when the statistical multiplexing effect is taken into account. We also analyze the MAC resource
sharing between the short-range dependent (SRD) on/off sources and the long-range dependent (LRD) fractional Brownian motion
(FBM) traffic, where the impact of the Hurst parameter on the admission region is investigated. Moveover, we demonstrate that
the proper selection of contention windows plays an important role in improving the WLAN’s QoS capability, while the optimal
contention window for each class and the maximum admission region can be jointly solved in our analytical model. The analysis
accuracy and the resource utilization improvement from statistical multiplexing gain and contention window optimization are
demonstrated by extensive numerical results.
Yu Cheng received the B.E. and M.E. degrees in Electrical Engineering from Tsinghua University, Beijing, China, in 1995 and 1998,
respectively, and the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario,
Canada, in 2003. From September 2004 to July 2006, he was a postdoctoral research fellow in the Department of Electrical and
Computer Engineering, University of Toronto, Ontario, Canada. Since August 2006, he has been with the Department of Electrical
and Computer Engineering, Illinois Institute of Technology, Chicago, Illinois, USA, as an Assistant Professor. His research
interests include service and application oriented networking, autonomic network management, Internet performance analysis,
resource allocation, wireless networks, and wireless/wireline interworking. He received a Postdoctoral Fellowship Award from
the Natural Sciences and Engineering Research Council of Canada (NSERC) in 2004.
Xinhua Ling received the B. Eng. degree in Radio Engineering from Southeast University, Nanjing, China in 1993 and the M. Eng. degree
in Electrical Engineering from the National University of Singapore, Singapore in 2001. He is currently pursuing the Ph.D.
degree in the Department of Electrical and Computer Engineering at the University of Waterloo, Ontario, Canada. From 1993
to 1998, he was an R&D Engineer in Beijing Institute of Radio Measurement, China. From February 2001 to September 2002, he
was with the Centre for Wireless Communications (currently Institute for Infocom Research), Singapore, as a Senior R&D Engineer,
developing the protocol stack for UE in the UMTS system. His general research interests are in the areas of cellular, WLAN,
WPAN, mesh and ad hoc networks and their internetworking, focusing on protocol design and performance analysis.
Lin X. Cai received the B.Sc. degree in computer science from Nanjing University of Science and Technology, Nanjing, China, in 1996
and the MASc. degree in electrical and computer engineering from the University of Waterloo, Waterloo, Canada, in 2005. She
is currently working toward the Ph.D. degree in the same field at the University of Waterloo. Her current research interests
include network performance analysis and protocol design for multimedia applications over wireless networks.
Wei Song received the B.S. degree in electrical engineering from Hebei University, China, in 1998 and the M.S. degree in computer
science from Beijing University of Posts and Telecommunications, China, in 2001. She is currently working toward the Ph.D.
degree at the Department of Electrical and Computer Engineering, University of Waterloo, Canada. Her current research interests
include resource allocation and quality-of-service (QoS) provisioning for the integrated cellular networks and wireless local
area networks (WLANs).
Weihua Zhuang received the Ph.D. degree in electrical engineering from the University of New Brunswick, Canada. Since October 1993, she
has been with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, where she is a Professor.
Dr. Zhuang is a co-author of the textbook Wireless Communications and Networking (Prentice Hall, 2003). Her current research interests include multimedia wireless communications, wireless networks, and
radio positioning. She received the Outstanding Performance Award in 2005 and 2006 from the University of Waterloo and the
Premier’s Research Excellence Award in 2001 from the Ontario Government for demonstrated excellence of scientific and academic
contributions. She is the Editor-in-Chief of IEEE Transactions on Vehicular Technology and an Editor of IEEE Transactions on Wireless Communications.
Xuemin (Sherman) Shen received the B.Sc.(1982) degree from Dalian Maritime University (China) and the M.Sc. (1987) and Ph.D. degrees (1990) from
Rutgers University, New Jersey (USA), all in electrical engineering. He is a Professor and the Associate Chair for Graduate
Studies, Department of Electrical and Computer Engineering, University of Waterloo, Canada. His research focuses on mobility
and resource management in interconnected wireless/wired networks, UWB wireless communications systems, wireless security,
and ad hoc and sensor networks. He is a co-author of three books, and has published more than 300 papers and book chapters
in wireless communications and networks, control and filtering. Dr. Shen serves as the Technical Program Committee Chair for
IEEE Globecom’07, General Co-Chair for Chinacom’07 and QShine’06, the Founding Chair for IEEE Communications Society Technical
Committee on P2P Communications and Networking. He also serves as a Founding Area Editor for IEEE Transactions on Wireless Communications; Associate Editor for IEEE Transactions on Vehicular Technology; KICS/IEEE Journal of Communications and Networks; Computer Networks (Elsevier); ACM/Wireless Networks; and Wireless Communications and Mobile Computing (John Wiley), etc. He has also served as Guest Editor for IEEE JSAC, IEEE Wireless Communications, and IEEE Communications Magazine. Dr. Shen received the Excellent Graduate Supervision Award in 2006, and the Outstanding Performance Award in 2004 from the
University of Waterloo, the Premier’s Research Excellence Award in 2003 from the Province of Ontario, Canada, and the Distinguished
Performance Award in 2002 from the Faculty of Engineering, University of Waterloo. Dr. Shen is a registered Professional Engineer
of Ontario, Canada.
Alberto Leon-Garcia received the B.S., M.S., and Ph.D. degrees in electrical engineering from the University of Southern California, in 1973,
1974, and 1976 respectively. He is a Full Professor in the Department of Electrical and Computer Engineering, University of
Toronto, ON, Canada, and he currently holds the Nortel Institute Chair in Network Architecture and Services. In 1999 he became
an IEEE fellow for “For contributions to multiplexing and switching of integrated services traffic”.
Dr. Leon-Garcia was Editor for Voice/Data Networks for the
IEEE Transactions on Communications from 1983 to 1988 and Editor for the IEEE Information Theory Newsletter from 1982 to 1984. He was Guest Editor of the September 1986 Special Issue on Performance Evaluation of Communications Networks
of the IEEE Selected Areas on Communications. He is also author of the textbooks Probability and Random Processes for Electrical Engineering (Reading, MA: Addison-Wesley), and Communication Networks: Fundamental Concepts and Key Architectures (McGraw-Hill), co-authored with Dr. Indra Widjaja. 相似文献
4.
The proper functioning of mobile ad hoc networks depends on the hypothesis that each individual node is ready to forward packets
for others. This common assumption, however, might be undermined by the existence of selfish users who are reluctant to act
as packet relays in order to save their own resources. Such non-cooperative behavior would cause the sharp degradation of
network throughput. To address this problem, we propose a credit-based Secure Incentive Protocol (SIP) to stimulate cooperation
among mobile nodes with individual interests. SIP can be implemented in a fully distributed way and does not require any pre-deployed
infrastructure. In addition, SIP is immune to a wide range of attacks and is of low communication overhead by using a Bloom
filter. Detailed simulation studies have confirmed the efficacy and efficiency of SIP.
This work was supported in part by the U.S. Office of Naval Research under Young Investigator Award N000140210464 and under
grant N000140210554.
Yanchao Zhang
received the B.E. degree in Computer Communications from Nanjing University of Posts and Telecommunications, Nanjing, China,
in July 1999, and the M.E. degree in Computer Applications from Beijing University of Posts and Telecommunications, Beijing,
China, in April 2002. Since September 2002, he has been working towards the Ph.D. degree in the Department of Electrical and
Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are network and distributed
system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks, wireless sensor networks,
wireless mesh networks, and heterogeneous wired/wireless networks.
Wenjing Lou
is an assistant professor in the Electrical and Computer Engineering department at Worcester Polytechnic Institute. She obtained
her Ph.D degree in Electrical and Computer Engineering from University of Florida in 2003. She received the M.A.Sc degree
from Nanyang Technological University, Singapore, in 1998, the M.E degree and the B.E degree in Computer Science and Engineering
from Xi'an Jiaotong University, China, in 1996 and 1993 respectively. From Dec 1997 to Jul 1999, she worked as a Research
Engineer in Network Technology Research Center, Nanyang Technological University. Her current research interests are in the
areas of ad hoc and sensor networks, with emphases on network security and routing issues.
Wei Liu
received his B.E. and M.E. in Electrical and Information Engineering from Huazhong University of Science and Technology, Wuhan,
China, in 1998 and 2001. In August 2005, he received his PhD in Electrical and Computer Engineering from University of Florida.
Currently, he is a senior technical member with Scalable Network Technologies. His research interest includes cross-layer
design, and communication protocols for mobile ad hoc networks, wireless sensor networks and cellular networks.
Yuguang Fang
received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in Electrical
Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and Computer
Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate
professor with tenure in August 2003 and a professor in August 2005. He has published over 150 papers in refereed professional
journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of
Naval Research Young Investigator Award in 2002. He has served on many editorial boards of technical journals including IEEE
Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM
Wireless Networks. He is a senior member of the IEEE. 相似文献
5.
An important objective of next-generation wireless networks is to provide quality of service (QoS) guarantees. This requires
a simple and efficient wireless channel model that can easily translate into connection-level QoS measures such as data rate,
delay and delay-violation probability. To achieve this, in Wu and Negi (IEEE Trans. on Wireless Communications 2(4) (2003)
630–643), we developed a link-layer channel model termed effective capacity, for the setting of a single hop, constant-bit-rate arrivals, fluid traffic, and wireless channels with negligible propagation
delay. In this paper, we apply the effective capacity technique to deriving QoS measures for more general situations, namely,
(1) networks with multiple wireless links, (2) variable-bit-rate sources, (3) packetized traffic, and (4) wireless channels
with non-negligible propagation delay.
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003. From July 1997 to December 1999, he conducted
graduate research at Polytechnic University, Brooklyn, New York. During the summers of 1998, 1999 and 2000, he conducted research
at Fujitsu Laboratories of America, Sunnyvale, California, on architectures and traffic management algorithms in the Internet
and wireless networks for multimedia applications.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001.
Currently, he is an Associate Editor for the IEEE Transactions on Vehicular Technology and Associate Editor for International
Journal of Ad Hoc and Ubiquitous Computing. He served as Program Chair for IEEE/ACM First International Workshop on Broadband
Wireless Services and Applications (BroadWISE 2004); and as TPC member of over 20 conferences such as IEEE INFOCOM'05, IEEE
ICC'05, IEEE WCNC'05, and IEEE Globecom'04. He is Vice Chair of Mobile and wireless multimedia Interest Group (MobIG), Technical
Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Award Committee, Technical Committee
on Multimedia Communications, IEEE Communications Society. He is also Director of Communications, IEEE Gainesville Section.
Rohit Negi received the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology, Bombay, India in 1995. He
received the M.S. and Ph.D. degrees from Stanford University, CA, USA, in 1996 and 2000 respectively, both in Electrical Engineering.
He has received the President of India Gold medal in 1995.
Since 2000, he has been with the Electrical and Computer Engineering department at Carnegie Mellon University, Pittsburgh,
PA, USA, where he is an Assistant Professor. His research interests include signal processing, coding for communications systems,
information theory, networking, cross-layer optimization and sensor networks. 相似文献
6.
In this paper, we develop an analytical model to evaluate the delay performance of the burst-frame-based CSMA/CA protocol
under unsaturated conditions, which has not been fully addressed in the literature. Our delay analysis is unique in that we
consider the end-to-end packet delay, which is the duration from the epoch that a packet enters the queue at the MAC layer
of the transmitter side to the epoch that the packet is successfully received at the receiver side. The analytical results
give excellent agreement with the simulation results, which represents the accuracy of our analytical model. The results also
provide important guideline on how to set the parameters of the burst assembly policy. Based on these results, we further
develop an efficient adaptive burst assembly policy so as to optimize the throughput and delay performance of the burst-frame-based
CSMA/CA protocol.
Kejie Lu received the B.E. and M.E. degrees in Telecommunications Engineering from Beijing University of Posts and Telecommunications,
Beijing, China, in 1994 and 1997, respectively. He received the Ph.D. degree in Electrical Engineering from the University
of Texas at Dallas in 2003. In 2004 and 2005, he was a postdoctoral research associate in the Department of Electrical and
Computer Engineering, University of Florida. Currently, he is an assistant professor in the Department of Electrical and Computer
Engineering, University of Puerto Rico at Mayagüez. His research interests include architecture and protocols design for computer
and communication networks, performance analysis, network security, and wireless communications.
Jianfeng Wang received the B.E. and M.E. degrees in electrical engineering from Huazhong University of Science and Technology, China, in
1999 and 2002, respectively, and the Ph.D. degree in electrical engineering from University of Florida in 2006. From January
2006 to July 2006, he was a research intern in wireless standards and technology group, Intel Corporation. In October 2006,
he joined Philips Research North America as a senior member research staff in wireless communications and networking department.
He is engaged in research and standardization on wireless networks with emphasis on medium access control (MAC).
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001, and the Best Paper Award in International Conference on Quality of Service in Heterogeneous Wired/Wireless
Networks (QShine) 2006.
Currently, he serves as the Editor-in-Chief of Journal of Advances in Multimedia, and an Associate Editor for IEEE Transactions
on Wireless Communications, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Transactions on Vehicular
Technology, and International Journal of Ad Hoc and Ubiquitous Computing. He is also a guest-editor for IEEE Journal on Selected
Areas in Communications (JSAC), Special Issue on Cross-layer Optimized Wireless Multimedia Communications. He served as Program
Chair for IEEE/ACM First International Workshop on Broadband Wireless Services and Applications (BroadWISE 2004); and as a
technical program committee member of over 30 conferences. He is Vice Chair of Mobile and wireless multimedia Interest Group
(MobIG), Technical Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Best Paper Award
Committee, Technical Committee on Multimedia Communications, IEEE Communications Society.
Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D. degree in
Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and
Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor and got an early promotion to an associate
professor with tenure in August 2003 and to a full professor in August 2005. He has published over 200 papers in refereed
professional journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and
the Office of Naval Research Young Investigator Award in 2002. He has served on several editorial boards of technical journals
including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing
and ACM Wireless Networks. He have also been actively participating in professional conference organizations such as serving
as The Steering Committee Co-Chair for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium
Co-Chair for IEEE Globecom’2004, and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2007). He
is a senior member of the IEEE. 相似文献
7.
Po-Chih Tseng Chao-Tsung Huang Liang-Gee Chen 《The Journal of VLSI Signal Processing》2005,41(1):35-47
In this paper, a novel reconfigurable discrete wavelet transform processor architecture is proposed to meet the diverse computing requirements of future generation multimedia SoC. The proposed architecture mainly consists of reconfigurable processing element array and reconfigurable address generator, featuring dynamically reconfigurable capability where the wavelet filters and wavelet decomposition structures can be reconfigured as desired at run-time. The lifting-based reconfigurable processing element array possesses better computation efficiency than convolution-based architectures, and a systematic design method is provided to generate the hardware configurations of different wavelet filters for it. The reconfigurable address generator handles flexible address generation for data I/O access in different wavelet decomposition structures. A prototyping chip has been fabricated by TSMC 0.35 μm 1P4M CMOS process. At 50 MHz, this chip can achieve at most 100 M pixels/sec transform throughput, together with energy efficiency and unique reconfigurability features, proving it to be a universal and extremely flexible computing engine for heterogeneous reconfigurable multimedia systems.Po-Chih Tseng was born in Tao-Yuan, Taiwan in 1977. He received the B.S. degree in Electrical and Control Engineering from National Chiao Tung University in 1999 and the M.S. degree in Electrical Engineering from National Taiwan University in 2001. He currently is pursuing the Ph.D. degree at the Graduate Institute of Electronics Engineering, Department of Electrical Engineering, National Taiwan University. His research interests include VLSI design and implementation for signal processing systems, energy-efficient reconfigurable computing for multimedia systems, and power-aware image and video coding systems.Chao-Tsung Huang was born in Kaohsiung, Taiwan, R.O.C., in 1979. He received the B.S. degree from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., in 2001. He currently is working toward the Ph.D. degree at the Graduate Institute of Electronics Engineering, National Taiwan University. His major research interests include VLSI design and implementation for signal processing systems.Liang-Gee Chen (S’84–M’86–SM’94–F’01) received the B.S., M.S., and Ph.D. degrees in electrical engineering from National Cheng Kung University, Tainan, Taiwan, R.O.C., in 1979, 1981, and 1986, respectively. In 1988, he joined the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. During 1993–1994, he was a Visiting Consultant in the DSP Research Department, AT&T Bell Labs, Murray Hill, NJ. In 1997, he was a Visiting Scholar of the Department of Electrical Engineering, University of Washington, Seattle. Currently, he is Professor at National Taiwan University, Taipei, Taiwan, R.O.C. His current research interests are DSP architecture design, video processor design, and video coding systems.Dr. Chen has served as an Associate Editor of IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY since 1996, as Associate Editor of the IEEE TRANSACTIONS ON VLSI SYSTEMS since 1999, and as Associate Editor of IEEE TRANSACTIONS CIRCUITS AND SYSTEMS II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of VLSI Signal Processing Systems. He is also the Associate Editor of the PROCEEDINGS OF THE IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications. During 2001–2002, he served as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi. 相似文献
8.
Sensor nodes are densely deployed to accomplish various applications because of the inexpensive cost and small size. Depending
on different applications, the traffic in the wireless sensor networks may be mixed with time-sensitive packets and reliability-demanding
packets. Therefore, QoS routing is an important issue in wireless sensor networks. Our goal is to provide soft-QoS to different
packets as path information is not readily available in wireless networks. In this paper, we utilize the multiple paths between
the source and sink pairs for QoS provisioning. Unlike E2E QoS schemes, soft-QoS mapped into links on a path is provided based
on local link state information. By the estimation and approximation of path quality, traditional NP-complete QoS problem
can be transformed to a modest problem. The idea is to formulate the optimization problem as a probabilistic programming,
then based on some approximation technique, we convert it into a deterministic linear programming, which is much easier and
convenient to solve. More importantly, the resulting solution is also one to the original probabilistic programming. Simulation
results demonstrate the effectiveness of our approach.
This work was supported in part by the U.S. National Science Foundation under grant DBI-0529012, the National Science Foundation
Faculty Early Career Development Award under grant ANI-0093241 and the Office of Naval Research under Young Investigator Award
N000140210464.
Xiaoxia Huang received her BS and MS in the Electrical Engineering from Huazhong University of Science and Technology in 2000 and 2002,
respectively. She is completing her Ph.D. degree in the Department of Electrical and Computer Engineering at the University
of Florida. Her research interests include mobile computing, QoS and routing in wireless ad hoc networks and wireless sensor
networks.
Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in
Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and
Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate
professor with tenure in August 2003 and to a full professor in August 2005. He holds a University of Florida Research Foundation
(UFRF) Professorship from 2006 to 2009. He has published over 200 papers in refereed professional journals and conferences.
He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research Young Investigator
Award in 2002. He has served on several editorial boards of technical journals including IEEE Transactions on Communications,
IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM Wireless Networks. He have also
been activitely participating in professional conference organizations such as serving as The Steering Committee Co-Chair
for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium Co-Chair for IEEE Globecom’2004,
and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2007). 相似文献
9.
This paper describes the design and implementation of a hybrid intelligent surveillance system that consists of an embedded
system and a personal computer (PC)-based system. The embedded system performs some of the image processing tasks and sends
the processed data to the PC. The PC tracks persons and recognizes two-person interactions by using a grayscale side view
image sequence captured by a stationary camera. Based on our previous research, we explored the optimum division of tasks
between the embedded system and the PC, simulated the embedded system using dataflow models in Ptolemy, and prototyped the
embedded system in real-time hardware and software using a 16-bit CISC microprocessor. This embedded system processes one
320 × 240 frame in 89 ms, which yields one-third of the rate of 30 Hz video system. In addition, the real-time embedded system
prototype uses 5.7 K bytes of program memory, 854 K bytes of internal data memory and 2 M bytes external DRAM.
Koichi Sato is a Ph.D. student in the Department of Electrical and Computer Engineering at The University of Texas at Austin. He earned
his B.S. in University of Tokyo, Japan in 1993. He worked for Automotive Development Center in Mitsubishi Electric Corporation
where he was involved in lane and automobile recognition in vehicle video processing products such as automatic cruise control
and drowsiness detection systems. He enrolled in the current University at 1998 and received an M.S in 2000. In his Master's
thesis he worked on human tracking and human interaction recognition. His current work includes velocity extraction using
the TSV transform, object tracking, and 3D object reconstruction.
Brian L. Evans is a tenured Associate Professor in the Department of Electrical and Computer Engineering at The University of Texas at Austin.
His research and teaching efforts are in embedded real-time signal and image processing systems. In signal processing, his
research group is focused on the design and real-time software implementation of ADSL and VDSL transceivers, for high-speed
Internet access. In image processing, his group is focused on the design and real-time software implementation of high-quality
halftoning for desktop printers, smart image acquisition for digital still cameras, and 3-D sonar imaging systems. In signal
and image processing, Dr. Evans has published over 100 refereed conference and journal papers. Dr. Evans is the primary architect
of the Signals and Systems Pack for Mathematica, which has been on the market since October 1995. He was a key contributor
to UC Berkeley's Ptolemy Classic electronic design automation environment for embedded systems, which has been successfully
commercialized by Agilent and Cadence. His BSEECS (1987) degree is from the Rose-Hulman Institute of Technology, and his MSEE
(1988) and PhDEE (1993) degrees are from the Georgia Institute of Technology. From 1993 to 1996, he was a post-doctoral researcher
in the Ptolemy project at UC Berkeley. He is a member of the Design and Implementation of Signal Processing Systems Technical
Committee of the IEEE Signal Processing Society, and a Senior Member of the IEEE. He is the recipient of a 1997 National Science
Foundation CAREER Award.
J.K. Aggarwal has served on the faculty of The University of Texas at Austin College of Engineering since 1964 and is currently Cullen
Professor of Electrical and Computer Engineering and Director of the Computer and Vision Research Center. His research interests
include computer vision and pattern recognition focusing on human motion. A Fellow of IEEE since 1976 and IAPR since 1998,
he received the Senior Research Award of the American Society of Engineering Education in 1992, the 1996 Technical Achievement
Award of the IEEE Computer Society and the graduate teaching award at The University of Texas at Austin in 1992. He has served
as Chairman of the IEEE Computer Society Technical Committee on Pattern Analysis and Machine Intelligence (1987--1989); Director
of the NATO Advanced Research Workshop on Multisensor Fusion for Computer Vision, Grenoble, France (1989); Chairman of the
IEEE Computer Society Conference on Computer Vision and Pattern Recognition (1993), and President of the International Association
for Pattern Recognition (1992--1994). He is a Life Fellow of IEEE and Golden Core member of IEEE Computer Society. He has
authored and edited a number of books, chapters, proceedings of conferences, and papers. 相似文献
10.
In this paper, we propose a novel concept called Hitch-hiking in order to reduce the energy consumption of broadcast application for wireless networks. Hitch-hiking takes advantage of
the physical layer design that facilitates the combining of partial signals to obtain the complete information. The concept
of combining partial signals using maximal ratio combiner [15] has been used to improve the reliability of the communication link but has never been exploited to reduce energy consumption
in broadcasting over wireless ad hoc networks. We study the advantage of Hitch-hiking for the scenario when the transmission
power level of nodes is fixed as well as the scenario when the nodes can adjust their power level. For both scenarios, we
show that Hitch-hiking is advantageous and have proposed algorithms to construct broadcast tree with Hitch-hiking taken into
consideration. For fixed transmission power case, we propose and analyze a centralized heuristic algorithm called SPWMH (Single
Power Wireless Multicast with Hitch-hiking) to construct a broadcast tree with minimum forwarding nodes. For the latter case,
we propose a centralized heuristic algorithm called Wireless Multicast with Hitch-hiking (WMH) to construct an energy efficient
tree using Hitch-hiking and also present a distributed version of the heuristic. We also evaluate the proposed heuristics
through simulation. Simulation results show that Hitch-hiking can reduce the transmission cost of broadcast by as much as
50%. Further, we propose and evaluate a protocol called Power Saving with Broadcast Tree (PSBT) that reduces energy consumption
of broadcast by eliminating redundancy in receive operation. Finally, we propose an algorithm that takes advantage of both
Hitch-hiking and PSBT in conserving energy.
Manish Agarwal is an engineer at Microsoft, Redmond. He received his Masters degree in Electrical and Computer Engineering from University
of Massachusetts, Amherst in 2004. He received his undergraduate degree from Indian Institute of Technology, Guwahati. His
research interest lies in the field of mobile ad hoc networks.
Lixin Gao is an associate professor of Electrical and Computer Engineering at the University of Masschusetts, Amherst. She received
her Ph.D. degree in computer science from the University of Massachusettes at Amherst in 1996. Her research interests include
multimedia networking and Internet routing. Between May 1999 and January 2000, she was a visiting researcher at AT&T Research
Labs and DIMACS. She is an Alfred P. Sloan Fellow and received an NSF CAREER Award in 1999. She is a member of IEEE, ACM,
and Sigma Xi.
Joon Ho Cho received the B.S. degree (summa cum laude) in electrical engineering from Seoul National University, Seoul, Korea, in 1995
and the M.S.E.E. and Ph.D. degrees in electrical and computer engineering from Purdue University, West Lafayette, IN, in 1997
and 2001, respectively. From 2001 to 2004, he was with the University of Massachusetts at Amherst as an Assistant Professor.
Since July 2004, he has been with Pohang University of Science and Technology (POSTECH), Pohang, Korea, where he is presently
an Assistant Professor in the Department of Electronic and Electrical Engineering. His research interests include wideband
systems, multiuser communications, adaptive signal processing, packet radio networks, and information theory. Dr. Cho is currently
an Associate Editor for the IEEE Transactions on Vehicular Technology.
Jie Wu is a Professor at Department of Computer Science and Engineering, Florida Atlantic University. He has published over 300
papers in various journal and conference proceedings. His research interests are in the area of mobile computing, routing
protocols, fault-tolerant computing, and interconnection networks. Dr. Wu served as a program vice chair for 2000 International
Conference on Parallel Processing (ICPP) and a program vice chair for 2001 IEEE International Conference on Distributed Computing
Systems (ICDCS). He is a program co-chair for the IEEE 1st International Conference on Mobile Ad-hoc and Sensor Systems (MASS'04).
He was a co-guest-editor of a special issue in IEEE Computer on “Ad Hoc Networks”. He also editored several special issues
in Journal of Parallel and Distributing Computing (JPDC) and IEEE Transactions on Parallel and Distributed Systems (TPDS).
He is the author of the text “Distributed System Design” published by the CRC press. Currently, Dr. Wu serves as an Associate
Editor in IEEE Transactions on Parallel and Distributed Systems and three other international journals. Dr. Wu is a recipient
of the 1996–97 and 2001–2002 Researcher of the Year Award at Florida Atlantic University. He served as an IEEE Computer Society
Distinguished Visitor. Dr. Wu is a Member of ACM and a Senior Member of IEEE. 相似文献
11.
To efficiently support quality of service (QoS) in future wireless networks, it is important to model a wireless channel in
terms of connection-level QoS metrics such as data rate, delay and delay-violation probability. To achieve this, in [7], we
proposed and developed a link-layer channel model termed effective capacity (EC) for flat fading channels. In this paper, we apply the effective capacity technique to modeling frequency selective fading
channels. Specifically, we utilize the duality between the distribution of a queue with superposition of N i.i.d. sources, and the distribution of a queue with a frequency-selective fading channel that consists of N i.i.d. sub-channels, to model a frequency selective fading channel. In the proposed model, a frequency selective fading channel
is modeled by three EC functions; we also propose a simple and efficient algorithm to estimate these EC functions. Simulation
results show that the actual QoS metric is closely approximated by the QoS metric predicted by the proposed EC channel model.
The accuracy of the prediction using our model can translate into efficiency in admission control and resource reservation.
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003. From July 1997 to December 1999, he conducted
graduate research at Polytechnic University, Brooklyn, New York. During the summers of 1998, 1999 and 2000, he conducted research
at Fujitsu Laboratories of America, Sunnyvale, California, on architectures and traffic management algorithms in the Internet
and wireless networks for multimedia applications.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001.
Currently, he is an Associate Editor for the IEEE Transactions on Vehicular Technology and Associate Editor for International
Journal of Ad Hoc and Ubiquitous Computing. He served as Program Chair for IEEE/ACM First International Workshop on Broadband
Wireless Services and Applications (BroadWISE 2004); and as TPC member of over 30 conferences. He is Vice Chair of Mobile
and wireless multimedia Interest Group (MobIG), Technical Committee on Multimedia Communications, IEEE Communications Society.
He is a member of the Best Paper Award Committee, Technical Committee on Multimedia Communications, IEEE Communications Society.
He is also Director of Communications, IEEE Gainesville Section.
Rohit Negi received the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology, Bombay, India in 1995. He
received the M.S. and Ph.D. degrees from Stanford University, CA, USA, in 1996 and 2000 respectively, both in Electrical Engineering.
He has received the President of India Gold medal in 1995.
Since 2000, he has been with the Electrical and Computer Engineering department at Carnegie Mellon University, Pittsburgh,
PA, USA, where he is an Associate Professor. His research interests include signal processing, coding for communications systems,
information theory, networking, cross-layer optimization and sensor networks. 相似文献
12.
Chao-Tsung Huang Po-Chih Tseng Liang-Gee Chen 《The Journal of VLSI Signal Processing》2005,40(2):175-188
In this paper, a VLSI architecture for lifting-based shape-adaptive discrete wavelet transform (SA-DWT) with odd-symmetric filters is proposed. The proposed architecture is comprised of a stage-based boundary extension strategy and the shape-adaptive boundary handling units. The former could reduce the complexity of multiplexers that are introduced to solve the shape-adaptive boundary extension. The latter consists of two multiplexers and can solve the shape-adaptive boundary extension locally without any additional register. Two case studies are presented, including the JPEG 2000 default (9, 7) filter and MPEG-4 default (9, 3) filter. According to comparison results with previous architectures, the efficiency of the proposed architectures is proven.Chao-Tsung Huang was born in Kaohsiung, Taiwan in 1979. He received the B.S. degree from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan in 2001. He is currently working toward the Ph.D. degree at the Graduate Institute of Electronics Engineering, National Taiwan University. His major research interests include VLSI design and implementation for 1-D, 2-D, and 3-D Discrete Wavelet Transform. cthuang@video.ee.ntu.edu.twPo-Chih Tseng was born in Tao-Yuan, Taiwan in 1977. He received the B.S. degree in Electrical and Control Engineering from National Chiao Tung University in 1999 and the M.S. degree in Electrical Engineering from National Taiwan University in 2001. He currently is pursuing the Ph.D. degree at the Graduate Institute of Electronics Engineering, Department of Electrical Engineering, National Taiwan University. His research interests include VLSI design and implementation for signal processing systems, energy-efficient reconfigurable computing for multimedia systems, and power-aware image and video coding systems. pctseng@video.ee.ntu.edu.twLiang-Gee Chen (S84–M86–SM94–F01) received the B.S., M.S., and Ph.D. degrees in electrical engineering from National Cheng Kung University, Tainan, Taiwan, R.O.C., in 1979, 1981, and 1986, respectively.In 1988, he joined the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. During 1993–1994, he was a Visiting Consultant in the DSP Research Department, AT&T Bell Labs, Murray Hill, NJ. In 1997, he was a Visiting Scholar of the Department of Electrical Engineering, University of Washington, Seattle. Currently, he is Professor at National Taiwan University, Taipei, Taiwan, R.O.C. His current research interests are DSP architecture design, video processor design, and video coding systems.Dr. Chen has served as an Associate Editor of IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY since 1996, as Associate Editor of the IEEE TRANSACTIONS ON VLSI SYSTEMS since 1999, and as Associate Editor of IEEE TRANSACTIONS CIRCUITS AND SYSTEMS II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of Video Signal Processing Systems. He is also the Associate Editor of the PROCEEDINGS OF THE IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications. During 2001–2002, he served as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi. lgchen@video.ee.ntu.edu.tw 相似文献
13.
Yung-Chi Chang Chih-Wei Hsu Wei-Min Chao Liang-Gee Chen 《The Journal of VLSI Signal Processing》2006,44(1-2):117-134
Video streaming with varying transmission bandwidth is becoming increasingly important. In this paper, an interactive video
streaming system is proposed. Fine Granularity Scalability (FGS) is applied to be the streaming video format. The computational
complexity of FGS coding is analyzed to explore an efficient FGS implementation. A new transmission model is proposed for
the realization of a content-aware video streaming. At encoder side, the current MPEG-4 FGS coding flow is reordered such
that the picture-level maximum can be acquired in advance and bit-plane data can be dynamically adapted. With these proposed
hardware-oriented optimization approaches, a hardwired FGS block-level processing core is proposed to achieve a cost-effective
solution to FGS implementation. The streaming server can adaptively decide quality-enhanced region by selective enhancement
according to both object information from encoding side and user-defined region from receiver side. From the simulation results,
it’s demonstrated that the proposed approach can provide better quality in users’ interest regions with no bit-rate or complexity
overhead.
Yung-Chi Chang was born in Kaohsiung, Taiwan, R.O.C., in 1975. He received the B.S., M.S., and Ph.D. degrees from the Department of Electrical
Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., in 1998, 2000, and 2005, respectively. He serves as senior
engineer in SoC Solutions Dept., Vivotek Inc. now. His research interests include video coding algorithms and VLSI architectures
for image/video processing.
Chih-Wei Hsu was born in Taipei, Taiwan, in 1979. He received the B.S.E.E and M.S.E.E degrees from National Taiwan University (NTU), Taipei,
in 2001 and 2003, respectively. He joined MediaTek, Inc., Hsinchu, Taiwan, in 2003, where he develops integrated circuits
related to multimedia coding standard and digital consumer devices. His research interests include video coding, video processing
and VLSI design.
Wei-Min Chao was born in Taoyuan, Taiwan, R.O.C., in 1977. He received the B.S. and M.S. degrees from the Department of Electronics Engineering,
National Taiwan University in 2000 and 2002 separately. His research interests include video coding algorithms and VLSI architecture
for image and video processing.
Liang-Gee Chen was born in Yun-Lin, Taiwan, in 1956. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from National
Cheng Kung University, Tainan, Taiwan, in 1979, 1981, and 1986, respectively. He was an Instructor (1981–1986), and an Associate
Professor (1986–1988) in the Department of Electrical Engineering, National Cheng Kung University. In the military service
during 1987 to 1988, he was an Associate Professor in the Institute of Resource Management, Defense Management College. In
1988, he joined the Department of Electrical Engineering, National Taiwan University. During 1993 to 1994 he was a Visiting
Consultant of DSP Research Department, AT&T Bell Lab, Murray Hill. In 1997, he was a visiting scholar of the Department of
Electrical Engineering, University of Washington, Seattle. During 2001 to 2004, he was the first director of the Graduate
Institute of Electronics Engineering (GIEE) in National Taiwan University (NTU). Currently, he is a Professor of the Department
of Electrical Engineering and GIEE in NTU, Taipei, Taiwan. He is also the director of the Electronics and Optoelectronics
Research Laboratories in Industrial Technology Research Institute, Hsinchu, Taiwan. His current research interests are DSP
architecture design, video processor design, and video coding systems. Dr. Chen has served as an Associate Editor of IEEE
Transactions on Circuits and Systems for Video Technology since 1996, as Associate Editor of IEEE Transactions on VLSI Systems
since 1999, and as Associate Editor of IEEE Transactions on Circuits and Systems II since 2000. He has been the Associate
Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of Video
Signal Processing Systems. He is also the Associate Editor of the Proceedings of the IEEE. He was the General Chairman of
the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation.
He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical
Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the
IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS
Technical Committee on Multimedia Systems and Applications. During 2001–2002, he served as a Distinguished Lecturer of the
IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to
1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference
on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society.
In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence
Award from Acer. He is a member of Phi Tan Phi. 相似文献
14.
Yung-Chi Chang Chao-Chih Huang Wei-Min Chao Liang-Gee Chen 《The Journal of VLSI Signal Processing》2005,41(2):183-191
In this paper, the bitstream parsing analysis and an efficient and flexible bitstream parsing processor are presented. The bitstream parsing analysis explores the critical part in bitstream parsing. Based on the result, the novel approaches to parse data partitioned bitstreams are presented. An efficient instruction set optimized for bitstream processing, especially for DCT coefficient decoding, is designed and the processor architecture can be programmed for various video standards. It has been integrated into an MPEG-4 video decoding system successfully and can achieve real time bitstream decoding with bitstream coded under 4CIF frame size with 30 fps, 8Mbps, which is the specification of MPEG-4 Advanced Simple Profile Level 5.Yung-Chi Chang was born in Kaohsiung, Taiwan, R.O.C., in 1975. He received the B.S. and M.S. degrees from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C., in 1998 and 2000, respectively, where he is currently pursuing the Ph.D. degree in the Graduate Institute of Electrical Engineering. His research interests include video coding algorithms and VLSI architectures for image/video processing.Chao-Chih Huang was born in Taiwan, R.O.C., in 1977. He received the B.S. and M.S. degree in electrical engineering from National Taiwan University in 2000 and 2002, respectively. In Oct 2002, he has joined the multimedia team of Realtek Taiwan, to be a system design engineer and researched on video coding algorithms. His research interests include video compression/coding and image processing.Wei-Min Chao was born in Taoyuan, Taiwan, R.O.C., in 1977. He received the B.S. and M.S. degrees from the Department of Electronics Engineering, National Taiwan University in 2000 and 2002 separately. His research interests include video coding algorithms and VLSI architecture for image and video processing.Liang-Gee Chen was born in Yun-Lin, Taiwan, in 1956. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from National Cheng Kung University, Tainan, Taiwan, in 1979, 1981, and 1986, respectively. He was an Instructor (1981–1986), and an Associate Professor (1986–1988) in the Department of Electrical Engineering, National Cheng Kung University. In the military service during 1987 to 1988, he was an Associate Professor in the Institute of Resource Management, Defense Management College. In 1988, he joined the Department of Electrical Engineering, National Taiwan University. During 1993 to 1994 he was a Visiting Consultant of DSP Research Department, AT&T Bell Lab, Murray Hill. In 1997, he was a visiting scholar of the Department of Electrical Engineering, University of Washington, Seattle. During 2001 to 2004, he was the first director of the Graduate Institute of Electronics Engineering (GIEE) in National Taiwan University (NTU). Currently, he is a Professor of the Department of Electrical Engineering and GIEE in NTU, Taipei, Taiwan. He is also the director of the Electronics Research and Service Organization in Industrial Technology Research Institute, Hsinchu, Taiwan. His current research interests are DSP architecture design, video processor design, and video coding systems.Dr. Chen has served as an Associate Editor of IEEE Transactions on Circuits and Systems for Video Technology since 1996, as Associate Editor of IEEE Transactions on VLSI Systems since 1999, and as Associate Editor of IEEE Transactions on Circuits and Systems II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since 1999, and a Guest Editor for the Journal of Video Signal Processing Systems. He is also the Associate Editor of the Proceedings of the IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society, and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems. He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications. During 2001–2002, he served as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in 1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi. 相似文献
15.
Connected coverage, which reflects how well a target field is monitored under the base station, is the most important performance
metric used to measure the quality of surveillance that wireless sensor networks (WSNs) can provide. To facilitate the measurement
of this metric, we propose two novel algorithms for individual sensor nodes to identify whether they are on the coverage boundary,
i.e., the boundary of a coverage hole or network partition. Our algorithms are based on two novel computational geometric
techniques called localized Voronoi and neighbor embracing polygons. Compared to previous work, our algorithms can be applied
to WSNs of arbitrary topologies. The algorithms are fully distributed in the sense that only the minimal position information
of one-hop neighbors and a limited number of simple local computations are needed, and thus are of high scalability and energy
efficiency. We show the correctness and efficiency of our algorithms by theoretical proofs and extensive simulations.
Chi Zhang received the B.E. and M.E. degrees in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China,
in July 1999 and January 2002, respectively. Since September 2004, he has been working towards the Ph.D. degree in the Department
of Electrical and Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are
network and distributed system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks,
wireless sensor networks, wireless mesh networks, and heterogeneous wired/wireless networks.
Yanchao Zhang received the B.E. degree in computer communications from Nanjing University of Posts and Telecommunications, Nanjing, China,
in July 1999, the M.E. degree in computer applications from Beijing University of Posts and Telecommunications, Beijing, China,
in April 2002, and the Ph.D. degree in electrical and computer engineering from the University of Florida, Gainesville, in
August 2006. Since September 2006, he has been an Assistant Professor in the Department of Electrical and Computer Engineering,
New Jersey Institute of Technology, Newark. His research interest include wireless and Internet security, wireless networking,
and mobile computing. He is a member of the IEEE and ACM.
Yuguang Fang received the BS and MS degrees in Mathematics from Qufu Normal University, Qufu, Shandong, China, in 1984 and 1987, respectively,
a Ph.D. degree in Systems and Control Engineering from Department of Systems, Control and Industrial Engineering at Case Western
Reserve University, Cleveland, Ohio, in January 1994, and a Ph.D. degree in Electrical Engineering from Department of Electrical
and Computer Engineering at Boston University, Massachusetts, in May 1997.
From 1987 to 1988, he held research and teaching position in both Department of Mathematics and the Institute of Automation
at Qufu Normal University. From September 1989 to December 1993, he was a teaching/research assistant in Department of Systems,
Control and Industrial Engineering at Case Western Reserve University, where he held a research associate position from January
1994 to May 1994. He held a post-doctoral position in Department of Electrical and Computer Engineering at Boston University
from June 1994 to August 1995. From September 1995 to May 1997, he was a research assistant in Department of Electrical and
Computer Engineering at Boston University. From June 1997 to July 1998, he was a Visiting Assistant Professor in Department
of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was an Assistant Professor
in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology, Newark, New Jersey. In May
2000, he joined the Department of Electrical and Computer Engineering at University of Florida, Gainesville, Florida, where
he got early promotion to Associate Professor with tenure in August 2003, and to Full Professor in August 2005. His research
interests span many areas including wireless networks, mobile computing, mobile communications, wireless security, automatic
control, and neural networks. He has published over one hundred and fifty (150) papers in refereed professional journals and
conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of Naval Research
Young Investigator Award in 2002. He also received the 2001 CAST Academic Award. He is listed in Marquis Who’s Who in Science
and Engineering, Who’s Who in America and Who’s Who in World.
Dr. Fang has actively engaged in many professional activities. He is a senior member of the IEEE and a member of the ACM.
He is an Editor for IEEE Transactions on Communications, an Editor for IEEE Transactions on Wireless Communications, an Editor
for IEEE Transactions on Mobile Computing, an Editor for ACM Wireless Networks, and an Editor for IEEE Wireless Communications.
He was an Editor for IEEE Journal on Selected Areas in Communications:Wireless Communications Series, an Area Editor for ACM
Mobile Computing and Communications Review, an Editor for Wiley International Journal on Wireless Communications and Mobile
Computing, and Feature Editor for Scanning the Literature in IEEE Personal Communications. He has also actively involved with
many professional conferences such as ACM MobiCom’02 (Committee Co-Chair for Student Travel Award), MobiCom’01, IEEE INFOCOM’06,
INFOCOM’05 (Vice-Chair for Technical Program Committee), INFOCOM’04, INFOCOM’03, INFOCOM’00, INFOCOM’98, IEEE WCNC’04, WCNC’02,
WCNC’00 Technical Program Vice-Chair), WCNC’99, IEEE Globecom’04 (Symposium Co-Chair), Globecom’02, and International Conference
on Computer Communications and Networking (IC3N) (Technical Program Vice-Chair). 相似文献
16.
Yung-Chi Chang Wei-Min Chao Chih-Wei Hsu Liang-Gee Chen 《The Journal of VLSI Signal Processing》2006,42(1):7-19
An MPEG-4 video coding SOC design is presented in this paper. We adopt platform-based architecture with an embedded RISC core
and efficient memory organization. A motion estimator supporting predictive diamond search and spiral full search is implemented
for compromise between compression performance and design cost. The proposed data reuse scheme reduces required memory access
bandwidth. For texture coding path, an interleaving DCT/IDCT scheduling with substructure sharing technique is proposed. Several
key modules are integrated into an efficient platform in hardware/software co-design fashion. The cost-efficient video encoder
SOC consumes 256.8 mW at 40 MHz and achieves real-time encoding of 30 CIF (352×288) frames per second.
Yung-Chi Chang was born in Kaohsiung, Taiwan, R.O.C., in 1975. He received the B.S. and M.S. degrees from the Department of Electrical Engineering,
National Taiwan University, Taipei, Taiwan, R.O.C., in 1998 and 2000, respectively, where he is currently pursuing the Ph.D.
degree in the Graduate Institute of Electrical Engineering. His research interests include video coding algorithms and VLSI
architectures for image/video processing.
Wei-Min Chao was born in Taoyuan, Taiwan, R.O.C., in 1977. He received the B.S. and M.S. degrees from the Department of Electronics Engineering,
National Taiwan University in 2000 and 2002 separately. His research interests include video coding algorithms and VLSI architecture
for image and video processing.
Chih-Wei Hsu was born in Taipei, Taiwan, in 1979. He received the B.S.E.E and M.S.E.E degrees from National Taiwan University (NTU), Taipei,
in 2001 and 2003, respectively. He joined MediaTek, Inc., Hsinchu, Taiwan, in 2003, where he develops integrated circuits
related to multimedia systems and optical storage devices. His research interests include object tracking, video coding, baseband
signal processing, and VLSI design.
Liang-Gee Chen was born in Yun-Lin, Taiwan, in 1956. He received the B.S., M.S., and Ph.D. degrees in electrical engineering from National
Cheng Kung University, Tainan, Taiwan, in 1979, 1981, and 1986, respectively. He was an Instructor (1981-1986), and an Associate
Professor (1986-1988) in the Department of Electrical Engineering, National Cheng Kung University. In the military service
during 1987 to 1988, he was an Associate Professor in the Institute of Resource Management, Defense Management College. In
1988, he joined the Department of Electrical Engineering, National Taiwan University. During 1993 to 1994 he was a Visiting
Consultant of DSP Research Department, AT & T Bell Lab, Murray Hill. In 1997, he was a visiting scholar of the Department
of Electrical Engineering, University of Washington, Seattle. During 2001 to 2004, he was the first director of the Graduate
Institute of Electronics Engineering (GIEE) in National Taiwan University (NTU). Currently, he is a Professor of the Department
of Electrical Engineering and GIEE in NTU, Taipei, Taiwan. He is also the director of the Electronics Research and Service
Organization in Industrial Technology Research Institute, Hsinchu, Taiwan. His current research interests are DSP architecture
design, video processor design, and video coding systems.
Dr. Chen has served as an Associate Editor of IEEE Transactions on Circuits and Systems for Video Technology since 1996, as
Associate Editor of IEEE Transactions on VLSI Systems since 1999, and as Associate Editor of IEEE Transactions on Circuits
and Systems II since 2000. He has been the Associate Editor of the Journal of Circuits, Systems, and Signal Processing since
1999, and a Guest Editor for the Journal of Video Signal Processing Systems. He is also the Associate Editor of the Proceedings
of the IEEE. He was the General Chairman of the 7th VLSI Design/CAD Symposium in 1995 and of the 1999 IEEE Workshop on Signal
Processing Systems: Design and Implementation. He is the Past-Chair of Taipei Chapter of IEEE Circuits and Systems (CAS) Society,
and is a member of the IEEE CAS Technical Committee of VLSI Systems and Applications, the Technical Committee of Visual Signal
Processing and Communications, and the IEEE Signal Processing Technical Committee of Design and Implementation of SP Systems.
He is the Chair-Elect of the IEEE CAS Technical Committee on Multimedia Systems and Applications. During 2001--2002, he served
as a Distinguished Lecturer of the IEEE CAS Society. He received the Best Paper Award from the R.O.C. Computer Society in
1990 and 1994. Annually from 1991 to 1999, he received Long-Term (Acer) Paper Awards. In 1992, he received the Best Paper
Award of the 1992 Asia-Pacific Conference on circuits and systems in the VLSI design track. In 1993, he received the Annual
Paper Award of the Chinese Engineer Society. In 1996 and 2000, he received the Outstanding Research Award from the National
Science Council, and in 2000, the Dragon Excellence Award from Acer. He is a member of Phi Tan Phi. 相似文献
17.
In order to conserve battery power in very dense sensor networks, some sensor nodes may be put into the sleep state while
other sensor nodes remain active for the sensing and communication tasks. In this paper, we study the node sleep scheduling
problem in the context of clustered sensor networks. We propose and analyze the Linear Distance-based Scheduling (LDS) technique
for sleeping in each cluster. The LDS scheme selects a sensor node to sleep with higher probability when it is farther away
from the cluster head. We analyze the energy consumption, the sensing coverage property, and the network lifetime of the proposed
LDS scheme. The performance of the LDS scheme is compared with that of the conventional Randomized Scheduling (RS) scheme.
It is shown that the LDS scheme yields more energy savings while maintaining a similar sensing coverage as the RS scheme for
sensor clusters. Therefore, the LDS scheme results in a longer network lifetime than the RS scheme.
Jing Deng received the B.E. and M.E. degrees in Electronic Engineering from Tsinghua University, Beijing, P. R. China, in 1994 and
1997, respectively, and the Ph.D. degree in Electrical and Computer Engineering from Cornell University, Ithaca, NY, in 2002.
Dr. Deng is an assistant professor in the Department of Computer Science at the University of New Orleans. From 2002 to 2004,
he visited the CASE center and the Department of Electrical Engineering and Computer Science at Syracuse University, Syracuse,
NY as a research assistant professor, supported by the Syracuse University Prototypical Research in Information Assurance
(SUPRIA) program. He was a teaching assistant from 1998 to 1999 and a research assistant from 1999 to 2002 in the School of
Electrical and Computer Engineering at Cornell University. His interests include mobile ad hoc networks, wireless sensor networks,
wireless network security, energy efficient wireless networks, and information assurance.
Wendi B. Heinzelman is an assistant professor in the Department of Electrical and Computer Engineering at the University of Rochester. She received
a B.S. degree in Electrical Engineering from Cornell University in 1995 and M.S. and Ph.D. degrees in Electrical Engineering
and Computer Science from MIT in 1997 and 2000 respectively. Her current research interests lie in the areas of wireless communications
and networking, mobile computing, and multimedia communication. Dr. Heinzelman received the NSF Career award in 2005 for her
work on cross-layer optimizations for wireless sensor networks, and she received the ONR Young Investigator award in 2005
for her research on balancing resource utilization in wireless sensor networks. Dr. Heinzelman was co-chair of the 1st Workshop
on Broadband Advanced Sensor Networks (BaseNets '04), and she is a member of Sigma Xi, the IEEE, and the ACM.
Yunghsiang S. Han was born in Taipei, Taiwan, on April 24, 1962. He received the B.S. and M.S. degrees in electrical engineering from the National
Tsing Hua University, Hsinchu, Taiwan, in 1984 and 1986, respectively, and the Ph.D. degree from the School of Computer and
Information Science, Syracuse University, Syracuse, NY, in 1993. From 1986 to 1988 he was a lecturer at Ming-Hsin Engineering
College, Hsinchu, Taiwan. He was a teaching assistant from 1989 to 1992 and from 1992 to 1993 a research associate in the
School of Computer and Information Science, Syracuse University. From 1993 to 1997 he was an Associate Professor in the Department
of Electronic Engineering at Hua Fan College of Humanities and Technology, Taipei Hsien, Taiwan. From 1997 to 2004 he was
with the Department of Computer Science and Information Engineering at National Chi Nan University, Nantou, Taiwan. He was
promoted to Full Professor in 1998. From June to October 2001 he was a visiting scholar in the Department of Electrical Engineering
at University of Hawaii at Manoa, HI, and from September 2002 to January 2004 he was the SUPRIA visiting research scholar
in the Department of Electrical Engineering and Computer Science and CASE center at Syracuse University, NY. He is now with
the Graduate Institute of Communication Engineering at National Taipei University, Taipei, Taiwan. His research interests
are in wireless networks, security, and error-control coding. Dr. Han is a winner of 1994 Syracuse University Doctoral Prize.
Pramod K. Varshney was born in Allahabad, India on July 1, 1952. He received the B.S. degree in electrical engineering and computer science
(with highest honors), and the M.S. and Ph.D. degrees in electrical engineering from the University of Illinois at Urbana-Champaign
in 1972, 1974, and 1976 respectively. Since 1976 he has been with Syracuse University, Syracuse, NY where he is currently
a Professor of Electrical Engineering and Computer Science and the Research Director of the New York State Center for Advanced
Technology in Computer Applications and Software Engineering. His current research interests are in distributed sensor networks
and data fusion, detection and estimation theory, wireless communications, intelligent systems, signal and image processing,
and remote sensing he has published extensively. He is the author of Distributed Detection and Data Fusion, published by Springer-Verlag
in 1997 and has co-edited two other books. Dr. Varshney is a member of Tau Beta Pi and is the recipient of the 1981 ASEE Dow
Outstanding Young Faculty Award. He was elected to the grade of Fellow of the IEEE in 1997 for his contributions in the area
of distributed detection and data fusion. In 2000, he received the Third Millennium Medal from the IEEE and Chancellor's Citation
for exceptional academic achievement at Syracuse University. He serves as a distinguished lecturer for the AES society of
the IEEE. He is on the editorial board Information Fusion. He was the President of International Society of Information Fusion
during 2001. 相似文献
18.
In this paper, we study an approach for sharing channels to improve network utilization in packet-switched cellular networks.
Our scheme exploits unused resources in neighboring cells without the need for global coordination. We formulate a minimax
approach to optimizing the allocation of channels in this sharing scheme. We develop a measurement-based distributed algorithm
to achieve this objective and study its convergence. We illustrate, via simulation results, that the distributed channel sharing
scheme performs significantly better than the fixed channel scheme over a wide variety of traffic conditions.
This research was supported in part by the National Science Foundation through grants ECS-0098089, ANI-0099137, ANI-0207892,
ANI-9805441, ANI-0099137, and ANI-0207728, and by an Indiana 21st century grant. A conference version of this paper appeared
in INFOCOM 99. This work was done when all the authors were at Purdue University.
Suresh Kalyanasundaram received his Bachelors degree in Electrical and Electronics Engineering and Masters degree in Physics from Birla Institute
of Technology and Science, Pilani, India in 1996. He received his Ph.D. from the School of Electrical and Computer Engineering,
Purdue University, in May 2000. Since then he has been with Motorola, working in the area of performance analysis of wireless
networks.
Junyi Li received his B.S. and M.S. degrees from Shanghai Jiao Tong University, and Ph.D. degree from Purdue University. He was with
the Department of Digital Communications Research at Bell Labs, Lucent Technologies from 1998 to 2000. In 2000 as a founding
member he jointed Flarion Technologies, where he is now Director of Technology. He is a senior member of IEEE.
Edwin K.P. Chong received the B.E.(Hons.) degree with First Class Honors from the University of Adelaide, South Australia, in 1987; and the
M.A. and Ph.D. degrees in 1989 and 1991, respectively, both from Princeton University, where he held an IBM Fellowship. He
joined the School of Electrical and Computer Engineering at Purdue University in 1991, where he was named a University Faculty
Scholar in 1999, and was promoted to Professor in 2001. Since August 2001, he has been a Professor of Electrical and Computer
Engineering and a Professor of Mathematics at Colorado State University. His current interests are in communication networks
and optimization methods. He coauthored the recent book, An Introduction to Optimization, 2nd Edition, Wiley-Interscience,
2001. He was on the editorial board of the IEEE Transactions on Automatic Control, and is currently an editor for Computer
Networks. He is an IEEE Control Systems Society Distinguished Lecturer. He received the NSF CAREER Award in 1995 and the ASEE
Frederick Emmons Terman Award in 1998.
Ness B. Shroff received his Ph.D. degree from Columbia University, NY in 1994. He is currently an Associate Professor in the School of Electrical
and Computer Engineering at Purdue University. His research interests span the areas of wireless and wireline communication
networks. He is especially interested in fundamental problems in the design, performance, scheduling, capacity, pricing, and
control of these networks. His research is funded by various companies such as Intel, Hewlett Packard, Nortel, AT&T, and L.
G. Electronics; and government agencies such as the National Science Foundation, Indiana Dept. of Transportation, and the
Indiana 21st Century fund.
Dr. Shroff is an editor for IEEE/ACM Trans. on Networking and the Computer Networks Journal, and past editor of IEEE Communications
Letters. He was the conference chair for the 14th Annual IEEE Computer Communications Workshop (in Estes Park, CO, October
1999) and program co-chair for the symposium on high-speed networks, Globecom 2001 (San Francisco, CA, November 2000). He
is also the Technical Program co-chair for IEEE INFOCOM'03 and panel co-chair for ACM Mobicom'02. He received the NSF CAREER
award in 1996. 相似文献
19.
We propose an innovative resource management scheme for TDMA based mobile ad hoc networks. Since communications between some
important nodes in the network are more critical, they should be accepted by the network with high priority in terms of network
resource usage and quality of service (QoS) support. In this scheme, we design a location-aware bandwidth pre-reservation
mechanism, which takes advantage of each mobile node’s geographic location information to pre-reserve bandwidth for such high
priority connections and thus greatly reduces potential scheduling conflicts for transmissions. In addition, an end-to-end
bandwidth calculation and reservation algorithm is proposed to make use of the pre-reserved bandwidth. In this way, time slot
collisions among different connections and in adjacent wireless links along a connection can be reduced so that more high
priority connections can be accepted into the network without seriously hurting admissions of other connections. The salient
feature of our scheme is the collaboration between the routing and MAC layer that results in the more efficient spatial reuse
of limited resources, which demonstrates how cross-layer design leads to better performance in QoS support. Extensive simulations
show that our scheme can successfully provide better communication quality to important nodes at a relatively low price. Finally,
several design issues and future work are discussed.
Xiang Chen received the B.E. and M.E. degrees in electrical engineering from Shanghai Jiao Tong University, Shanghai, China, in 1997
and 2000, respectively. Afterwards, he worked as a MTS (member of technical staff) in Bell Laboratories, Beijing, China. He
is currently working toward the Ph.D. degree in the department of Electrical and Computer Engineering at the University of
Florida. His research is focused on protocol design and performance evaluation in wireless networks, including cellular networks,
wireless LANs, and mobile ad hoc networks. He is a member of Tau Beta Pi and a student member of IEEE.
Wei Liu received the BE and ME degrees in electrical engineering from Huazhong University of Science and Technology, Wuhan, China,
in 1998 and 2001, respectively. He is currently pursuing the P.hD. degree in the Department of Electrical and Computer Engineering,
University of Florida, Gainesville, where he is a research assistant in the Wireless Networks Laboratory (WINET). His research
interest includes QoS, secure and power efficient routing, and MAC protocols in mobile ad hoc networks and sensor networks.
He is a student member of the IEEE.
Hongqiang Zhai received the B.E. and M.E. degrees in electrical engineering from Tsinghua University, Beijing, China, in July 1999 and January
2002 respectively. He worked as a research intern in Bell Labs Research China from June 2001 to December 2001, and in Microsoft
Research Asia from January 2002 to July 2002. Currently he is pursuing the Ph.D. degree in the Department of Electrical and
Computer Engineering, University of Florida. He is a student member of IEEE.
Yuguang Fang received a Ph.D. degree in Systems and Control Engineering from Case Western Reserve University in January 1994, and a Ph.D.
degree in Electrical Engineering from Boston University in May 1997. From June 1997 to July 1998, he was a Visiting Assistant
Professor in Department of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was
an Assistant Professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology. In
May 2000, he joined the Department of Electrical and Computer Engineering at University of Florida where he got the early
promotion to Associate Professor with tenure in August 2003 and to Full Professor in August 2005. He has published over 180
papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career
Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is currently serving as an Editor for
many journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEETransactions
on Mobile Computing, and ACM Wireless Networks. He is also actively participating in conference organization such as the Program
Vice-Chair for IEEE INFOCOM’2005, Program Co-Chair for the Global Internet and Next Generation Networks Symposium in IEEE
Globecom’2004 and the Program Vice Chair for 2000 IEEE Wireless Communications and Networking Conference (WCNC’2000). 相似文献
20.
In this paper, the performance of selected error-control schemes based on forward error-control (FEC) coding for H.263+ video
transmission over an additive white Gaussian noise (AWGN) channel is studied. Joint source and channel coding (JSCC) techniques
that employ single-layer and 2-layer H.263+ coding in conjunction with unequal error protection (UEP) to combat channel errors
are quantitatively compared. Results indicate that with appropriate joint source and channel coding, tailored to the respective
layers, FEC-based error control in combination with 2-layer video coding techniques can lead to more acceptable quality for
wireless video delivery in the presence of channel impairments.
Yong Pei is currently a tenure-track assistant professor in the Computer Science and Engineering Department, Wright State University,
Dayton, OH. Previously he was a visiting assistant professor in the Electrical and Computer Engineering Department, University
of Miami, Coral Gables, FL. He received his B.S. degree in electrical power engineering from Tsinghua University, Beijing,
in 1996, and M.S. and Ph.D. degrees in electrical engineering from Rensselaer Polytechnic Institute, Troy, NY, in 1999 and
2002, respectively. His research interests include information theory, wireless communication systems and networks, and image/video
compression and communications. He is a member of IEEE and ACM.
James W. Modestino (S′67- M′73- SM′81- F′87) was born in Boston, MA, on April 27, 1940. He received the B.S. degree from Northeastern University,
Boston, MA, in 1962, and the M.S. degree from the University of Pennsylvania, Philadelphia, PA, in 1964, both in electrical
engineering. He also received the M.A. and Ph.D. degrees from Princeton University, Princeton, NJ, in 1968 and 1969, respectively.
He has held a number of industrial positions, including positions with RCA Communications Systems Division, Camden, NJ; General
Electronic Laboratories, Cambridge, MA; AVCO Systems Division, Wilmington, MA; GTE Laboratories, Waltham, MA; and MIT Lincoln
Laboratories, Lexington, MA. From 1970 to 1972, he was an Assistant Professor in the Department of Electrical Engineering,
Northeastern University. In 1972, he joined Rensselaer Polytechnic Institute, Troy, NY, where until leaving in 2002 he was
an Institute Professor in the Electrical, Computer and Systems Engineering Department and Director of the Center for Image
Processing Research. He has been responsible for teaching and research in the communication, information and signal processing
systems area. His specific research interests include communication in fading dispersive channels; detection, estimation and
filtering in impulsive or burst noise environments; digital signal, image and video processing; and multimedia communication
systems and networks.
In 2002 he joined the Department of Electrical and Computer Engineering at the University of Miami, Coral Gables, FL, as the
Victor E. Clarke Endowed Scholar, Professor and Chair. He has held visiting positions with the University of California at
San Diego, LaJolla, CA (1981–1982); GE Research and Development Center, Schenectady, NY (1988–1989); and Massachusetts Institute
of Technology, Cambridge, MA (1995–1996).
Dr. Modestino is a past member of the Board of Governors of the IEEE Information Theory Group. He is a past Associate Editor
and Book Review Editor for the IEEE TRANSACTIONS ON INFORMATION THEORY. In 1984, he was co-recipient of the Stephen O. Rice
Prize Paper Award from the IEEE Communications Society and in 2000 he was co-recipient of the best paper award at the International
Packet Video Conference. 相似文献