一种新型散射调制解调器设计  

A Novel Design of Troposcatter Modem

作　　者：卢坡[1] 陈君毅[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2013年第8期33-35,共3页Radio Engineering

摘　　要：针对对流层散射信道的衰落特点,提出了一种基于自适应选频的散射调制解调器设计方法。分析了自适应选频技术的理论性能,给出了仿真计算结果,在此基础上提出了一种自适应选频调制解调器硬件设计方案,并给出调制解调器在瑞利衰落信道条件下的测试结果,从而证实了散射调制解调器采用自适应选频技术能够取得较好的性能,为单天线散射设备的开发奠定了基础。Based on the characteristics of troposcatter channel,a kind of frequency adaptive troposcatter modem design scheme is presented.Firstly,the performance of frequency adaptive technology is analyzed in theory,and the simulation result is presented.Then,based on this,a kind of frequency adaptive troposcatter modem hardware scheme is proposed.Finally,the test result of this modem under the condition of Rayleigh fading channel is presented,which proves that the better performance is obtained by using the frequency adaptive technology,and provides reference for the development of scattering equipment using one antenna.

关 键 词：散射通信 频率分集 选择式合并 自适应选频 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]