非相关瑞利衰落信道模型比较与分析  

Comparative Analysis of Uncorrected Rayleigh Fading Channels Models

作　　者：朱秋明[1] 徐大专[1] 陈小敏[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《四川大学学报（工程科学版）》2009年第6期237-241,246,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：江苏省自然科学基金(BK2007192)

摘　　要：为了比较各种基于谐波信号叠加(SoS)瑞利衰落信道模型的复杂度和性能,推导确定型SoS模型的二阶统计量和均方误差的数学表达式,并指出该模型互相关函数的均方误差为非零常数,证明随机型SoS模型最佳入射角需要满足的条件,并与常见取值方法进行了比较。仿真结果表明,确定型模型由于入射角固定运算量较低,正交分量之间以及多径信道之间的相关性强;而随机型模型通过选取适当的入射角,可以获得良好的统计特性。In order to compare the complexity and performance of Sum-of-sinusoids(SoS) models for uncorrected Rayleigh fading channels,the second-order statistical formula for deterministic SoS model was derived,which showed that the variance of cross-correlation was not zero.Then,the requirements of signal′s angle of arrival(AoA) for statistical models were proved,which was used to compare with different selections.Simulation results showed that deterministic model has lower complexity but poor performance of indepen...

关 键 词：信道模型 瑞利衰落 SoS模型 入射角 

分 类 号：TN92[电子电信—通信与信息系统]