过采样技术在循环谱检测中的应用  

Application of Oversampling in Cycle Spectrum Detection

作　　者：滕建华[1] 陈跃斌[1] 李彬[1] 梁志茂[1] 

机构地区：[1]云南民族大学电气信息工程学院,云南昆明650500

出　　处：《昆明冶金高等专科学校学报》2010年第3期36-40,共5页Journal of Kunming Metallurgy College

摘　　要：循环平稳信号作为一类很重要的非平稳信号,对其特性的深入研究及其在某些信号处理方面的应用,已引起了业界关注并取得了一些重要成果。而某些非平稳信号经过过采样后具有了循环平稳特性。介绍了循环平稳信号的定义、性质及检测方法,论证了过采样信号的循环平稳特性,以QPSK信号为例在MATLAB平台上进行了仿真,并对PSK与FSK信号模型的循环谱进行仿真对比验证。As one of major non-stationary signals, cyclostationary signal has been studied and used in signal processing. Its use has caused wide concern and some achievements in it are made. Some non-stationary signals show cyclostationary features after sampling. Concept and detecting methods of cyclostationary signals were introduced, and the cyclostationary features of oversampling signals were discussed. QPSK signal, as an example, was simulated on MATLAB platform. Comparisons between the cycle spectra of PSK FSK signal were made.

关 键 词：过采样 周期平稳 谱相关 

分 类 号：TN911.6[电子电信—通信与信息系统]