Performance analysis of integrated space-time receiver with combined full-and reduced-complexity for DS/CDMA systems

V. Pham, T. B. Vu
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引用次数: 0

Abstract

An integrated space-time receiver is proposed to suppress co-channel interference and increase the capacity for DS/CDMA systems. The receiver employs an array of antennas, which allows it to exploit the spatial domain information in the received signals, and at the same time, each antenna incorporates an adaptive filter with varying complexity and operated in a manner similar to an adaptive equaliser, to further suppress interference in the temporal domain. Numerical results are presented using the minimum mean-squared error (MMSE) criterion, showing that the receiver offers significant performance improvement relative to corresponding time-domain-only counterpart in terms of the near-far resistance and capacity in multipath channels. A comparison of the MSE between simulation results using the RLS algorithm and analytical results using optimum Wiener solution is also presented.
DS/CDMA系统全复杂度与降复杂度组合时空接收机性能分析
为了抑制同信道干扰,提高DS/CDMA系统的容量,提出了一种集成空时接收机。接收机采用天线阵列,这使其能够利用接收信号中的空间域信息,同时,每个天线都包含一个具有不同复杂性的自适应滤波器,并以类似于自适应均衡器的方式操作,以进一步抑制时域中的干扰。采用最小均方误差(MMSE)准则给出的数值结果表明,在多径信道中,接收机在近端电阻和容量方面相对于相应的时域对应物具有显著的性能改进。本文还比较了采用RLS算法的仿真结果和采用最优维纳解的分析结果的均方误差。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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