基于MWC的单通道原型系统性能仿真  

Performance Simulation of a Single Channel Prototype System Based on MWC

作　　者：王庆国[1] 王华力[1] 王学玲[1] 曾显华[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《无线电工程》2015年第11期17-20,共4页Radio Engineering

基　　金：国家自然科学基金项目(61271345)

摘　　要：调制宽带转换器(Modulated Wideband Converter,MWC)可以实现欠奈奎斯特频率采样,为宽带稀疏信号采样提供了一种新的方法。为了验证调制宽带转换器的重构性能,在深入研究MWC原理的基础上,设计并实现了一种单通道的原型验证系统。通过合理设置测试方案对调制宽带转换器进行性能测试,并与理论仿真结果进行对比分析。测试结果表明,在正交匹配追踪算法(Orthogonal Matching Pursuit,OMP)下,调制宽带转换器能实现在远低于奈奎斯特频率下成功恢复原信号,初步验证了其可行性和正确性。Modulated Wideband Converter（ MWC） can realize Sub-Nyquist frequency sampling,which provides a new method for wideband sparse signal sampling.In order to verify the reconstruction performance of MWC,a prototype verification system is designed and implemented based on a study of MWC principle.The performance of the broadband converter is tested by reasonably setting the test scheme,and the results are compared with the theoretical simulation. The test results show that in the Orthogonal Matching Pursuit （OMP）algorithm,the modulated wideband converter can successfully restore the original signal at a frequency far below the Nyquist frequency,which preliminarily verifiesits feasibility and correctness.

关 键 词：调制带宽转换器 原型系统 重构性能 欠采样 

分 类 号：TN911.72[电子电信—通信与信息系统]