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基于随机共振和MIMO技术的协方差矩阵频谱感知算法

, PP. 1297-1303

Keywords: 通信技术,频谱感知,随机共振,MIMO技术,协方差矩阵

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Abstract:

在认知无线电系统中,为了使认知用户可以在低信噪比和衰落信道的条件下实现可靠的频谱感知,提出了基于随机共振和MIMO的协方差矩阵频谱感知算法。该算法将随机共振和MIMO技术用于协方差矩阵频谱感知,同时还给出了判决门限的计算方法。仿真实验结果表明:与不使用随机共振和MIMO技术的频谱感知算法相比,本文算法具有更高的检测性能;并且当天线数足够多时,该算法可以在很低信噪比情况下实现可靠的频谱感知。

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