摘要
通信信道为现代无线通信系统的主要组成部分,信号在信道传输时通信质量显得尤为重要。多普勒频移、路径衰落以及多径延迟等因素对通信质量影响较大。分析无线通信信道的衰落特点,发现大尺度衰落和小尺度衰落是影响无线通信的两大类衰落。运用MATLAB软件对两类衰落进行建模分析,提高信号在复杂环境的无线传播特性;运用仿真软件对Rayleigh衰落进行仿真,并对Jakes、Clarke模型进行分析。同时,针对影响自由空间通信的大尺度衰落模型进行仿真分析。
In modern wireless communication system,communication channel is a major part.The communication quality is very important when the signal is transmitted in the channel.Doppler shift,path fading and multipath delay have great influence on communication quality.This paper analyzes the fading characteristics of wireless communication channel.Large scale fading and small scale fading are two kinds of fading that affect wireless communication.Matlab software is used to model and analyze the two kinds of fading,which is of great significance to the wireless propagation characteristics of signals in complex environment.Through theoretical research and analysis,simulation software is used to simulate Rayleigh fading while Jakes and Clarke models are analyzed.At the same time,the large-scale fading model which affects free space communication is simulated and analyzed.
作者
杜路泉
DU Luquan(School of Electronic Information and Automation,Aba Teachers University,Aba,Sichuan Province 623002)
出处
《楚雄师范学院学报》
2020年第6期38-43,共6页
Journal of Chuxiong Normal University
基金
阿坝师范学院科技处规划项目(NO.ASB19-18)。
