一种多径衰落信道下的组合天线阵列和LMMSE多用户检测DS-CDMA接收机

2000 IEEE Emerging Technologies Symposium on Broadband, Wireless Internet Access. Digest of Papers (Cat. No.00EX414) Pub Date : 2000-04-10 DOI:10.1109/ETS.2000.916507

N. A. Mohamed, J. Dunham

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引用次数: 0

摘要

本文提出并分析了一种在多径衰落信道中结合自适应波束形成和线性最小均方误差(LMMSE)多用户检测的DS-CDMA接收机。通过波束形成，增强了期望用户的信号，减少了来自其他方向的同信道干扰。用于波束内多址干扰降低;使用LMMSE多用户检测。研究了频率选择性瑞利衰落信道中平均未编码误码率(BER)与平均天线信噪比(SNR)和接收天线数的关系。对LMMSE、去相关和并行干扰消除探测器的性能进行了比较。仿真结果表明，系统容量和/或覆盖范围有所提高。

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A combined antenna array and LMMSE multi-user detection DS-CDMA receiver in multipath fading channels

In this paper, a DS-CDMA receiver that combines adaptive beamforming together with a linear minimum mean square error (LMMSE) multi-user detection in a multipath fading channel is proposed and analyzed. By beamforming, the desired user's signal is enhanced and the co-channel interference from other directions is reduced. For in-beam multiple access interference reduction; LMMSE multi-user detection is used. The average uncoded bit error rate (BER) as a function of the average antenna signal-to-noise ratio (SNR) and the number of receiving antennas are examined in a frequency selective Rayleigh fading channel. Performance comparison between LMMSE, decorrelating and parallel interference cancellation detectors have been carried out. Simulation results show an increase in system capacity and/or improving the coverage.

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来源期刊

2000 IEEE Emerging Technologies Symposium on Broadband, Wireless Internet Access. Digest of Papers (Cat. No.00EX414)

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