基于周期平稳信号特性的自适应波束形成器在多径环境中的行为

L. Castedo, A. Figueiras-Vidal, C. Tseng, L. Griffiths
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引用次数: 7

摘要

本文研究了作者先前提出的用于自适应波束形成的非凸代价函数在相关环境中的平稳点问题。考虑了线性数字调制信号通过不同路径入射到阵列上的典型多径情况。结果表明,代价函数的最小值点对应于波束形成器的权重,可以很好地消除码间干扰。实际上,波束形成器结合了所有的多径信号来执行空间均衡
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Behavior of adaptive beamformers based on cyclostationary signal properties in multipath environments
The paper investigates the stationary points of a nonconvex cost function, proposed previously by the authors for adaptive beamforming, in a correlated environment. A typical multipath situation where a linear digital modulated signal is incident on the array through different paths is considered. It is shown that the points at which the minima of the cost function occur correspond to beamformer weights which provide perfect intersymbol interference removal. In effect, the beamformer combines all the multipath signals to perform a spatial equalization.<>
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