RAKE-SOVA Equalization for Multi-Code CDMA System with Low Spreading Factor(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by intersymbol interference (ISI) due to the interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress ISI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the ISI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed RAKE-SOVA receiver significantly outperform the traditional RAKE and RAKE-VA receivers.
- 社団法人電子情報通信学会の論文
- 2005-05-01
著者
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YOU Xiaohu
National Mobile Communications Research Laboratory, Southeast University
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You Xiaohu
National Mobile Communications Research Laboratory Southeast University
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You Xiaohu
School Of Information Science And Engineering Southeast University
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You Xiaohu
National Mobile Commun. Research Lab. Southeast University
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Kim Yun
School Of Electronics & Information Kyung Hee University
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Kim Yun
School Of Biological Sciences Seoul National University
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Wang Dongming
National Mobile Communications Research Laboratory Southeast Univ.
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Wang Dongming
National Mobile Communications Research Lab Southeast University
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Wang Dongming
National Mobile Communication Research Lab. Southeast University
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Wang Dongming
National Mobile Communications Research Laboratory Southeast University
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You Xiaohu
National Mobile Communications Research Laboratory Southeast Univ.
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ZHAO Junhui
Faculty of Information Technology, Macao University of Science and Technology
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Zhao Junhui
Faculty Of Information Technology Macao University Of Science And Technology
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Wang Dongming
National Mobile Commun. Res. Lab. Southeast Univ.
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