多径衰落信道的统计特性与仿真研究  

Statistical Analysis and Simulation Research Multi-Path Fading Channel

作　　者：谭立新[1] 何艳丽[1] 

机构地区：[1]中州大学,河南郑州450044

出　　处：《计算机仿真》2010年第7期96-98,129,共4页Computer Simulation

摘　　要：在多径衰落信道的统计特性与仿真实现问题的研究中,针对目前无线信道存在的不确定性和信道衰落对无线通信质量提高有不利因素的状态,为改善无线移动通信系统多径时延扩展而引起的符号间干扰的现状。在对多径信道的传输特性进行分析研究的基础上,对基带信号接收中多径引起的ISI进行仿真分析,并总结了利用MATLAB对无线移动信道进行仿真分析的一般方法,对多种调制方式下的诸如瑞利和莱斯衰落、频率选择性,AWGN信道等信道模型下的多径传播进行进一步仿真分析。这将为研究移动信道抗衰落技术提供基本依据,对实际工程有一定的理论指导意义。Research the multi -path fading channel statistical properties and system simulation problems.Aim at the uncertainty and decline of current wireless channel issues which have greatly limited the development of mobile wireless communications systems,to improve the inter - symbol interference arising from the multi - path delay In this paper,based on the characteristics analysis of a multi - path channel transmission,ISI caused by the base band signal reception is simulated and analysed,and the general approach of simulating wireless mobile channel with MATLAB is summarized..This will provides the study on mobile channel anti - fading technology whith the fundamental basis and has a certain theoretical significance for the actual project.

关 键 词：快衰落 多径效应 瑞利和莱斯衰落 频率选择性 

分 类 号：TN911.2[电子电信—通信与信息系统]