接收机运动情况下天线简谐运动对信道循环平稳性影响的分析  

Analysis of Influence of Antenna Simple Harmonic Motion on Channel Cyclostationarity under Case of Receiver Motion

作　　者：魏利霞[1] 曹士坷[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《计算机科学》2015年第3期39-41,64,共4页Computer Science

摘　　要：在均匀散射环境下,当天线做简谐运动时,信道中会引入循环平稳。通过分析信道循环平稳的产生机理,定义了循环平稳度来衡量引入的循环平稳。首先当接收机以恒速做直线运动且接收机上的天线做简谐运动时,研究了信道的自相关特性,包括循环平稳性;然后用Matlab仿真工具绘出有关曲线,仿真实验结果更加清晰地显示了信道的循环平稳性;最后揭示了信道循环平稳的研究意义,并对其在该领域的应用前景进行了展望。Simple harmonic motion（SHM）can induce cyclostationarity（CS）in channel autocorrelation under isotropic scattering（ISC）environments.With analysis of generation mechanism of cyclostationarity（CS）in channel,cyclostationarity of the channel can be measured by defining degrees of cyclostationarity（DCS）.The autocorrelation characteristics of the channel,including cyclostationarity,were studied when the receiver is moving at a constant speed along a straight line and the antenna is doing simple harmonic motion at the same time.Then related curves were simulated by Matlab,showing the cyclostationarity of channels more clearly.The significance of cyclostationarity and a discussion on the future research topics were refered at last.

关 键 词：循环平稳 接收机 天线 简谐运动 信道模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]