收稿日期: 2009-09-16
修回日期: 2009-11-25
网络出版日期: 2010-03-15
基金资助
国家自然科学基金(40701132)、安徽省自然科学基金(070412042)、高等学校省级优秀青年人才基金(2010SQRL030)、安徽师范大学青年基金(2008xqn54,2008xqn56)和安徽省原子与分子物理重点学科项目(2007- 005)资助
An efficient simulation method for Rayleigh channels
Received date: 2009-09-16
Revised date: 2009-11-25
Online published: 2010-03-15
叶新荣 , 张爱清 , 麻金继 . 一种仿真瑞利信道的有效方法[J]. 中国科学院大学学报, 2010 , 27(2) : 228 -233 . DOI: 10.7523/j.issn.2095-6134.2010.2.013
In this paper, a modified sum-of-sinusoids statistical simulation method is proposed for Rayleigh channels. In some well-known methods, there exist problems that the probabiltiy density function (pdf) of the quadrature components and the squared envelope autocorrelation are nonstationary. It shows that the modified method can eliminate the above problems. It is proved in theory that the autocorrelations and cross correlations of the quadrature components and the autocorrelation of the complex envelope of the modified simulators match the desired ones exactly. Moreover, simulation results show that it has a better performance in terms of the probability density functions of the envelope and phase, the level crossing rate, and the average fade duration than the previous methods.
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