Characterization and Performance Evaluation of Turbulent Plasma Sheath Channel  

作　　者：Jingzhuo Zhang Guolong He Peng Bai Jianhua Lu Ning Ge 

机构地区：[1]Department of Electronic Engineering, Tsinghua University [2]Synthetic Electronic Information System and Electronic Countermeasure Technology Research Department, Air Force Engineering University

出　　处：《China Communications》2016年第6期88-99,共12页中国通信（英文版）

基　　金：supported by the National Key Basic Research Program of China(2014CB340206);partly supported by National Natural Science Foundation of China(No.61132002,No.61321061)

摘　　要：Radio waves are highly attenuated and distorted by turbulent plasma sheath around hypersonic vehicles in near space, leading to communication blackout. The purpose of the paper is to investigate the plasma channel characteristics and the communication performances over the channel. We treat the turbulent plasma medium as a fast fading wireless channel. The coherence time and the spectrum spread of the plasma sheath channel are obtained in terms of root-meansquare(RMS). Baseband simulation scheme is proposed based on a stratified model of the plasma flow field. Results indicate that the coherence time is on the order of milliseconds and decreases rapidly with the increasing electron density turbulence. The spectrum spread due to plasma turbulence is also significant. Extensive simulations have been carried out to make communication performance evaluations. Quantitative results show that error floor takes place for PSK and QAM, while FSK with noncoherent detection is a promising method to mitigate the blackout problem.Radio waves are highly attenuated and distorted by turbulent plasma sheath around hypersonic vehicles in near space, leading to communication blackout. The purpose of the paper is to investigate the plasma channel characteristics and the communication performances over the channel. We treat the turbulent plasma medium as a fast fading wireless channel. The coherence time and the spectrum spread of the plasma sheath channel are obtained in terms of root-meansquare（RMS）. Baseband simulation scheme is proposed based on a stratified model of the plasma flow field. Results indicate that the coherence time is on the order of milliseconds and decreases rapidly with the increasing electron density turbulence. The spectrum spread due to plasma turbulence is also significant. Extensive simulations have been carried out to make communication performance evaluations. Quantitative results show that error floor takes place for PSK and QAM, while FSK with noncoherent detection is a promising method to mitigate the blackout problem.

关 键 词：plasma sheath channel characteristics fast fading error performance 

分 类 号：TN92[电子电信—通信与信息系统]