Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis
Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis
复制标题
MC-CDMA/TDD上行频域预均衡及其误码率分析
DOI：
10.1093/ietcom/e89-b.1.162
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
F. Adachi
中科院分区：
文献类型：
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作者：
Satoshi Abe;S. Takaoka;H. Tomeba;F. Adachi
在多载波码分多址（MCCDMA）上行链路（移动台到基站）中，由于不同用户的信号经过不同的频率选择性衰落信道，因此产生了较大的多址干扰（MAI）。频域均衡接收只能部分恢复不同用户信号间的正交性，导致误码率（BER）性能严重下降。因此，在传输之前均衡MC-CDMA信号的频域预均衡传输最近正引起关注。本文提出了一种适用于MC-CDMA/TDD上行链路的广义最小均方误差（GMMSE）频域预均衡传输。基于拉格朗日乘子法推导了预均衡权值。对频率选择性瑞利衰落信道中采用GMMSE频域预均衡传输的误码率性能进行了理论分析，并通过计算机仿真验证了理论分析的正确性。
SUMMARY In multi-carrier code division multiple access (MCCDMA) uplink (mobile-to-base station), since different users’ signals go through different frequency-selective fading channels, large multi-access interference (MAI) is produced. The use of frequency-domain equalization reception can only partially restore the orthogonality among different users’ signals, resulting in a severe degradation in the bit error rate (BER) performance. Hence, frequency-domain pre-equalization transmission, which equalizes the MC-CDMA signal before transmission, is recently attracting attention. In this paper, we present a generalized minimum mean square error (GMMSE) frequency-domain pre-equalization transmission suitable for MC-CDMA/TDD uplink. The pre-equalization weight is derived based on the method of Lagrange multipliers. The theoretical analysis of BER performance using the GMMSE frequency-domain pre-equalization transmission in a frequency-selective Rayleigh fading channel is presented and the result is confirmed by computer simulation.
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DOI：
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发表时间：
2004
期刊：
西洋精神史における言語観の変遷(松田隆美編)(慶應義塾大学出版会)
影响因子：
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作者：
斎藤慶典
通讯作者：
斎藤慶典