基于匹配追踪算法阈值改进的MIMO-OFDM信道估计研究Research on MIMO-OFDM channel estimation based on threshold improvement of matching pursuit algorithm
吴君钦,李宁,王加莉
摘要(Abstract)：
对于MIMO-OFDM系统信道估计的研究在国内外已经取得了一定的成果,其中采用CoSaMP算法进行信道估计时支撑候选集的选择尤为重要。采用CoSaMP算法对MIMO-OFDM信道进行估计,并在此基础上引入原子弱选择标准对候选集进行更进一步的优化,使改进后的CoSaMP算法在达到自适应的同时提高运算速率,达到信道估计算法自适应的目的。实验结果表明,对CoSaMP算法的候选集选择添加阈值后进行重构信号时复杂度降低,提高了运算速率,同时均方根误差较CoSaMP算法和OMP算法都有一定的提高。
关键词(KeyWords)： 信道估计;压缩感知;MIMO-OFDM;原子弱选择;CoSaMP算法;OMP算法
基金项目(Foundation): 基金项目:基于压缩感知的MCSAR三维高分辨率快速成像研究(61501210);; 电池友好的无线体域网高能效MAC协议研究(GJJ14428)~~
作者(Author): 吴君钦,李宁,王加莉
DOI: 10.16652/j.issn.1004-373x.2018.01.003
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