最优和次最优CDMA下行MMSE接收机的渐近分析

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI:10.1109/ISSPA.2003.1224747

Jean-Marie Chaufray, P. Loubaton, W. Hachem

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引用次数: 38

摘要

在本文中，我们研究了在频率选择信道上，用户可能具有不同的功率时，用于CDMA下行传输的线性接收器的性能。在扩频系数较大的情况下，在某些技术条件下，这些接收机输出的信噪比(SINR)具有简单易懂的表达式。自由概率论是一种研究大型随机矩阵渐近行为的理论。考虑并比较了两种线性接收器:MMSE接收器和芯片均衡器。

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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Asymptotic analysis of optimum and sub-optimum CDMA downlink MMSE receivers

In this paper, we investigate the performance of linear receivers for CDMA downlink transmissions over frequency selective channels, the users having possibly different powers. For large spreading factors and under some technical conditions, signal to interference and noise ratios (SINR) at the output of these receivers have simple and easily interpretable expressions. Free probability, a theory which studies in particular the asymptotic behavior of some large random matrices, is used. Two linear receivers are considered and compared: the MMSE receiver and a chip equalizer.

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Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.

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