Research On Channel Modeling For Wireless Communication

As an important part of wireless communication systems,radio channel has beenone of an essential issues of research field on wireless communication.The modelingand simulation of radio channel is of great importance to research and test of thewireless communication systems.Embarked from the propagation characteristics of radio waves,this dissertationresearches on the characteristics of channel fading and the channel parameters of radiochannel．What’s more,small-scale fading model of radio channel has been analyzed indepth．Espcially,this paper focuses on multipath effect and the Doppler effect.When studying existing flaws of simulation models and methods of wirelesschannel,this paper introduces an enhanced scheme is raised to generate multi-uncorrelated Rayleigh fading waves.Based on MEDS method.This improved schemecan reduce the complexity of realization when multi-uncorrelated Rayleigh fadingwaves are generated. Aiming at the characteristics of multipath clusters in mobilecommunication system,this article has researched some existing models of multipathclusters.A improved model based on two-cluster model is proposed to describe multi-path clusters channel.Simulation results show that the improved one matches the factbetter..Theoretic analysis and simulation results show that both the two improved schemesare apt to real fact effectively and accurately.