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自适应匹配追踪的OFDM系统窄带干扰检测

DOI: 10.3969/j.issn.1006-7043.201306059

Keywords: 正交频分复用, 窄带干扰, 压缩感知, 自适应匹配追踪算法, 稀疏度, 信号重构

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Abstract:

针对在OFDM通信系统中,基于压缩感知的窄带干扰检测时间过长的问题,提出了将自适应匹配追踪算法应用到压缩感知理论的信号重构过程中的算法。该算法可在未知干扰稀疏度的情况下,自适应地调整候选集原子的个数,在低于奈奎斯特采样频率前提下,快速实现单个及多个窄带干扰信号检测。仿真结果表明:所提算法能够有效地实现窄带干扰检测且运行速度快,改善了OFDM通信系统的性能。

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