Smart Antennas for Multiuser DS/CDMA Communications in Multipath Fading Channels(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
Smart antennas, with spatial processing, used in code division multiple access (CDMA) multiuser communications can enhance range, reliability and capacity. Moreover, the adaptive beamforming technologies can remove unwanted noise and interference from the received signal. In this paper, we propose four adaptive antenna receiver structures for direct-sequence (DS) CDMA multiuser environment with multipath fading channels. Narrowband and wideband adaptive array receiver structures are considered in this paper. LMS and RLS algorithms are employed in both narrowband and wideband receiver structures to adjust the spreading code coefficients. We call these new schemes as Wiener code filters. The weights of the adaptive beamformer and the spreading code are updated every symbol interval, so the computational complexity is very low. Simulation examples are given to compare the performances of the proposed receiver structures. Analyses are also given for these structures.
- 社団法人電子情報通信学会の論文
- 2005-07-01
著者
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Chen Jun
Department Of Earth Sciences Nanjing University
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Chen Jun
Department Of Electrical Engineering National Chung-hsing University
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Cheng Sheng
Department Of Electrical Engineering National Chung-hsing University
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Ueng Fang
Department Of Electrical Engineering National Chung-hsing University
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Cheng Sheng
Department Of Computer Science And Information Engineering National Cheng Kung University
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Chen Jun
Department Of Biomedical Engineering Division Of Orthopaedic Surgery Department Of Surgery Duke University
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