垂直分层空时码检测算法
首发时间:2008-12-15
摘要:本文首先简要介绍了空时信号处理;其次介绍了空时编码研究的三大方向;最后重点分析分层空时码。分层空时码最早是由贝尔实验室的Foschini等人提出的。其最大优点在于:允许使用一维的处理方法对多维空间信号进行处理,因此极大降低了译码复杂度。分层空时码的译码有多种算法,最优算法当然是最大似然译码(MLD)算法。但MLD算法具有指数复杂度,无法实用化,因此便有了各种简化的方法。本文着重分析推导了基于迫零准则和最小均方误差准则的估计算法。最后通过仿真分析了各种算法的性能和特点,并比较了两种算法的性能。
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Detection Algorithm for MIMO V-BLAST
Abstract:In this paper, space time signal process theory is firstly introduced; next, three directions of space time code research is described; at last, layer space time code is analyzed. Layer space time code is firstly proposed by Foschini in Bell Lab. The biggest advantage is to allow analyzing multi-dimension space signal with one-dimension method, so the complexity is low. There are some decoding algorithms of layer space time code, and the best method is MLD algorithm. However, because of the complexity of MLD algorithm, it can not be used in reality. Some methods are proposed to take place of MLD algorithm. In this paper, ZF and MMSE algorithms are introduced, and the characteristic of these two algorithms are analyzed and compared by simulation.
Keywords: multi-antenna space time code VLAST
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No.2659136195712293****
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