用于随机解调器压缩采样的重构判定方法

摘要

提出了一种随机解调器压缩采样重构成败的判定方法。该方法利用两次连续重构所得稀疏信号支撑之间的相关性来判断重构是否成功，其计算复杂度低，易于实现。仿真结果表明，该方法能准确判断随机解调器压缩采样重构成败，用于宽带频谱感知中能够显著降低信号不稀疏时对主用户的干扰概率。%A reconstruction failure detection method for random demodulator based compressed sampling is proposed, which utilizes the correlation between two consecutive reconstructed supports of the sparse signal. The method is easy to realize because of its low-computational complexity. Simulations show that the proposed method can judge whether the reconstruction is successful with high accuracy and it can reduce the interference probability with primary users when the signal is not that sparse.