| A New Performance Enhancement Algorithm for Space-time Block Coding in OFDM Systems |
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| 作者姓名： | XU Kai LUO Tao YIN Chang-chuan YUE Guang-xin Telecommunication Engineering School Beijing University of Posts and Telecommunications Beijing P.R. China |
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| 作者单位： | XU Kai，LUO Tao，YIN Chang-chuan，YUE Guang-xin Telecommunication Engineering School，Beijing University of Posts and Telecommunications，Beijing 100876，P.R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 摘 要： | 1 Introduction WirelesscommunicationusingMIMOsystems ,some timescalleda“volumetovolume”wirelesslink ,hasre centlyemergedasonofthemostsignificanttechnicalbreakthroughsinmoderncommunications1] .Inaddi tion ,space timecoding2～ 4 ] isa good proposalthatcombinessignalprocessingatthereceiverwithchannelcodingtechniquesappropriatetomultipletransmitan tennasandcansignificantlyimproveperformanceofMI MOsystems .Atthesametime ,OFDMiseffectiveinpresenceoffrequencyselectivefadinginthewirelessap …
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A New Performance Enhancement Algorithm for Space-time Block Coding in OFDM Systems |
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| XU Kai,LUO Tao,YIN Chang-chuan,YUE Guang-xin Telecommunication Engineering School,Beijing University of Posts and Telecommunications,Beijing ,P.R. China.A New Performance Enhancement Algorithm for Space-time Block Coding in OFDM Systems[J].The Journal of China Universities of Posts and Telecommunications,2004,11(3). |
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| Authors: | XU Kai LUO Tao YIN Chang-chuan YUE Guang-xin |
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| Abstract: | In this paper, a new performance enhancement algorithm for Space-Time Block Coding in OFDM System, which is an adaptive transmit optimization beamforming STBC-OFDM system based on Channel State Information (CSI), is proposed. And, the optimization beamforming weight vector is derived in case of maximal receiver Signal-to-Noise Ratio (SNR). Theoretic analysis and computer simulation results of the system over wireless Reyleigh fading channels show that the system can explore all the diversity resource and performance can be improved significantly compared with traditional STBC-OFDM system. In addition, the performance of enhancement algorithm is better than STTC-OFDM system and TCM-STBC-OFDM system in the case of higher receiver SNR. |
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| Keywords: | OFDM channel state information beamforming space-time block coding |
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