计算机科学 ›› 2013, Vol. 40 ›› Issue (Z11): 22-25.
李娜,陈松,王盛,李鸥
LI Na,CHEN Song,WANG Sheng and LI Ou
摘要: 压缩感知为认知无线电的宽频谱感知提供了一种新的方法和思路。基于压缩感知的原理,提出了一种多认知用户协作场景下,基于信号可信度的协作频谱检测算法。该算法根据不同认知用户接收信号的优劣判定用户感知结果的可信度,并利用正交匹配协作追踪算法获得认知区域内的频谱占用情况。仿真结果表明,该算法在不同信噪比范围下其检测性能均优于传统算法,以较小的复杂度代价改善了检测性能。
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