基于压缩传感的模拟-信息系统  

The Analog-information System Based on Compressive Sense

作　　者：方杰[1,2] 樊敏[2] 胡永刚[1] 

机构地区：[1]皖西学院机械与电子工程学院,安徽六安237012 [2]安徽大学计算智能与信号处理实验室,安徽合肥230039

出　　处：《皖西学院学报》2011年第2期67-70,共4页Journal of West Anhui University

基　　金：安徽省教育厅重点项目(KJ2010A325;KJ2009A054;KJ2011ZD10);安徽省优秀人才基金重点项目(2010SQRL184;2011SQRL149ZD)

摘　　要：根据奈奎斯特采样定理,采样频率至少为原始带限信号最高频率的两倍时,信号才能被完好地恢复,这将产生极大的数据量,给信号的获取及传输造成很大压力。压缩传感理论可以有效地解决这些问题,通过对某个基上稀疏的信号在接收端进行有限次随机测量,可获得比奈奎斯特采样小得多的传输数据量,并能够在接收端实现高概率精确重建。模拟-信息系统给出该理论的前端的一个物理实现的过程。According to Nyquist sampling theorem,a band-limited signal cannot be well reconstructed unless sampling frequency is least double top frequency of original signal,which will generate a tremendous amount of data and inflict great pressure on signal acquisition and transmission.These problems can be efficiently solved by Compressive sense theory-through finite random measurement of certain basis sparse signal at reception terminal,not only a transmission data that is much smaller than that of Nyquist sampling,but also a accurate reconstruction at high probability at the reception terminal can be obtained.Analog-information system provides a physical implementation process for front of this theory.

关 键 词：奈奎斯特采样 可压缩传感 模拟-信息 

分 类 号：TN911[电子电信—通信与信息系统]