计算机工程与应用 ›› 2016, Vol. 52 ›› Issue (16): 116-120.

• 网络、通信与安全 • 上一篇    下一篇

基于Legendre序列的确定性测量矩阵

崔  翔,万洪杰,肖  亮,谢晓明   

  1. 北京化工大学 信息科学与技术学院,北京 100029
  • 出版日期:2016-08-15 发布日期:2016-08-12

Legendre sequence based deterministic measurement matrix

CUI Xiang, WAN Hongjie, XIAO Liang, XIE Xiaoming   

  1. College of Information Science and Technology, Beijing University of Chemistry Technology, Beijing 100029, China
  • Online:2016-08-15 Published:2016-08-12

摘要: 近年来,压缩感知理论飞速发展。很多压缩感知的应用中,信号的测量可以通过卷积滤波和之后的二次采样完成。在此基础上,实现了一种由勒让德(Legendre)序列构造的矩阵。该矩阵在经过二次采样之后,得到一种新的确定性测量矩阵。对于一个K-稀疏的信号,通过该测量矩阵可以对信号进行稳定的恢复重建。据仿真结果显示,在对K-稀疏信号进行恢复的过程中,该测量矩阵的恢复效果与高斯随机测量矩阵的应用效果相当。

关键词: 确定性测量矩阵, 卷积压缩感知, 相关性, 勒让德序列

Abstract: For the past few years, Compressed Sensing(CS) has been developed very fast. In many applications of CS, the data measurement can be achieved by filtering and sub-sampling. In this paper, a new matrix with Legendre Sequence is constructed, which is based on Convolutional Compressed Sensing. After sub-sampling, a new deterministic measurement matrix is gotten. For signals that are sparse, the proposed matrix can guarantee a stable recovery. The results show that, the proposed matrix can offer comparable performance with a random Gaussian matrix in K-sparse signal reconstruction.

Key words: deterministic matrix, convolutional compressed sensing, coherence, Legendre sequence