中等速率散射传输波形优化设计  

Optimal Design of Waveform for Moderate Capacity Troposcatter Communication Systems

作　　者：沈斌松[1] 李志勇[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》2015年第3期77-80,共4页Radio Engineering

基　　金：国家部委基金资助项目

摘　　要：为了满足中等速率对流层散射设备的性能提升需求,从原理上对失真自适应和自适应均衡2种散射信号处理方法在抗失真能力与隐分集效果两方面进行分析与对比,同时建立采用前向纠错编码(FEC)的散射系统模型,分析了不同分集条件下FEC的误码性能以及编码增益;进而给出一种中等速率散射传输波形优化设计方案,对信号处理方式以及FEC进行优化设计,并在硬件系统测试平台上对优化设计波形进行误码性能实测。测试结果表明,该优化设计波形易于实现,误码性能优越。To satisfy the application requirement of moderate capacity troposcatter communication,theoretical analysis of the antidistortion ability and implicit diversity gain is made between distortion adaptive receiver and adaptive equalization. Troposcatter communication system model using FEC is established. The BER and coding gain under different diversity scheme are analyzed. Based on this,an optimal design of pulse-shaping,signal processing method and FEC scheme is proposed. The BER performance of this scheme was measured through hardware platform realization. The result shows that the proposed scheme is easy to implement with a significantly improved BER performance.

关 键 词：对流层散射通信 优化设计 自适应均衡 前向纠错编码 

分 类 号：TN911[电子电信—通信与信息系统]