基于子空间追踪的稀疏信号重构算法

摘要

信号重构算法是压缩感知理论中的重要环节，其优劣影响压缩感知的重构效果。基于子空间追踪算法，对经稀疏表示和测量矩阵压缩后的信号进行重构验证，理论分析和实验结果表明，子空间追踪算法能使信号在较高压缩比下保持良好的重构效果。%Signal reconstruction algorithm plays an important part in the theory of compressive sensing and determines the reconstruction quality of compressive sensing .In this paper ,based on the subspace pursuit(SP) algorithm ,the signal is reconstructed after sparse representation and compression by the measurement matrix .Theoretical analysis and experimental results show that subspace pursuit algorithm can maintain good effect of signal reconstruction at higher compression ratio .