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Scheduling spectrum access and allocating power and rate resources are tasks affecting critically the performance of wireless
cognitive radio (CR) networks. The present contribution develops a primal-dual optimization framework to schedule any-to-any
CR communications based on orthogonal frequency division multiple access and allocate power so as to maximize the weighted
average sum-rate of all users. Fairness is ensured among CR communicators and possible hierarchies are respected by guaranteeing
minimum rate requirements for primary users while allowing secondary users to access the spectrum opportunistically. The framework
leads to an iterative channel-adaptive distributed algorithm whereby nodes rely only on local information exchanges with their
neighbors to attain global optimality. Simulations confirm that the distributed online algorithm does not require knowledge
of the underlying fading channel distribution and converges to the optimum almost surely from any initialization.
Juan-Andrés Bazerque (SM’06) received his B.Sc. degree in Electrical Engineering from Universidad de la República (UdelaR), Montevideo, Uruguay in 2003. Since August 2006 he has been working towards the Ph.D. degree as a research assistant with the Electrical and Computer Engineering Department at the University of Minnesota, Minneapolis. From 2000 to 2006 he was a teaching assistant with the Department of Mathematics and Statistics, and with the Department of Electrical Engineering (UdelaR). From 2003 to 2006 he was a member of the technical Staff at the Uruguayan telecommunications company Uniotel S.A. developing applications for Voice over IP. His general research interests span the areas of communications, signal processing and wireless networking with current emphases on distributed resource allocation for cognitive radios. G. B. Giannakis (Fellow’97) received his Diploma in Electrical Engr. from the Ntl. Tech. Univ. of Athens, Greece, 1981. From 1982 to 1986 he was with the Univ. of Southern California (USC), where he received his MSc. in Electrical Engineering, 1983, MSc. in Mathematics, 1986, and Ph.D. in Electrical Engr., 1986. Since 1999 he has been a professor with the ECE Department at the Univ. of Minnesota, where he now holds an ADC Chair in Wireless Telecommunications. His general interests span the areas of communications, networking and statistical signal processing - subjects on which he has published more than 250 journal papers, 450 conference papers, two edited books and two research monographs. Current research focuses on complex-field and space-time coding, multicarrier, cooperative wireless communications, cognitive radios, cross-layer designs, mobile ad hoc networks and wireless sensor networks. G. B. Giannakis is the (co-) recipient of six paper awards from the IEEE Signal Processing (SP) and Communications Societies including the G. Marconi Prize Paper Award in Wireless Communications. He also received Technical Achievement Awards from the SP Society (2000), from EURASIP (2005), a Young Faculty Teaching Award and the G. W. Taylor Award for Distinguished Research from the University of Minnesota. He has served the IEEE in a number of posts, and is currently a Distinguished Lecturer for the IEEE-SP Society. 相似文献
| Georgios B. Giannakis (Corresponding author)Email: |
Juan-Andrés Bazerque (SM’06) received his B.Sc. degree in Electrical Engineering from Universidad de la República (UdelaR), Montevideo, Uruguay in 2003. Since August 2006 he has been working towards the Ph.D. degree as a research assistant with the Electrical and Computer Engineering Department at the University of Minnesota, Minneapolis. From 2000 to 2006 he was a teaching assistant with the Department of Mathematics and Statistics, and with the Department of Electrical Engineering (UdelaR). From 2003 to 2006 he was a member of the technical Staff at the Uruguayan telecommunications company Uniotel S.A. developing applications for Voice over IP. His general research interests span the areas of communications, signal processing and wireless networking with current emphases on distributed resource allocation for cognitive radios. G. B. Giannakis (Fellow’97) received his Diploma in Electrical Engr. from the Ntl. Tech. Univ. of Athens, Greece, 1981. From 1982 to 1986 he was with the Univ. of Southern California (USC), where he received his MSc. in Electrical Engineering, 1983, MSc. in Mathematics, 1986, and Ph.D. in Electrical Engr., 1986. Since 1999 he has been a professor with the ECE Department at the Univ. of Minnesota, where he now holds an ADC Chair in Wireless Telecommunications. His general interests span the areas of communications, networking and statistical signal processing - subjects on which he has published more than 250 journal papers, 450 conference papers, two edited books and two research monographs. Current research focuses on complex-field and space-time coding, multicarrier, cooperative wireless communications, cognitive radios, cross-layer designs, mobile ad hoc networks and wireless sensor networks. G. B. Giannakis is the (co-) recipient of six paper awards from the IEEE Signal Processing (SP) and Communications Societies including the G. Marconi Prize Paper Award in Wireless Communications. He also received Technical Achievement Awards from the SP Society (2000), from EURASIP (2005), a Young Faculty Teaching Award and the G. W. Taylor Award for Distinguished Research from the University of Minnesota. He has served the IEEE in a number of posts, and is currently a Distinguished Lecturer for the IEEE-SP Society. 相似文献
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