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MIMO系统中基于贝叶斯的稀疏信道估计算法
Authors
侯小静
吕治国
孙泽宇
邢萧飞
Publication date
1 January 2017
Publisher
《光通信研究》编辑部
Doi
Cite
Abstract
针对未知支持集贝叶斯匹配追踪算法中支持集搜索过于复杂的问题,提出一种改进的贝叶斯稀疏信道估计算法。该算法利用信道的稀疏特性来提高信道估计精度,通过计算信道期望来估计高维稀疏信道。为了提高支持集的搜索准确度,改进算法在支配支持集的搜索过程中引入了维特比路径译码的思想,保留所有发生概率差异低于门限的路径,并对支持集上的信道估计值进行计算,最后计算出信道期望并作为最后的信道估计值。理论分析和仿真结果都表明,改进算法在降低算法复杂度的同时还保持了较高的估计精度
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Last time updated on 26/01/2023