双多进制正交扩频在HF低速通信中的应用  

Application of Dual M-ary Orthogonal Spread Spectrum in HF Communication System

作　　者：康弘俊[1] 邓永洋[1] 罗磊[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2012年第8期19-21,共3页Communications Technology

摘　　要：双多进制正交扩频(Dual M-ary Orthogonal Spread Spectrum)技术是一种高频谱效率的扩频技术,而短波通信在通信领域具有其他通信手段无法替代的地位。阐述了双多进制正交扩频系统的基本原理,介绍了美军现役短波调制解调器标准MIL-STD-188-110B中的低速串行75 b/s波形。设计了基于双多进制扩频技术的短波低速改进波形,并与美军标MIL-STD-188-110B中的低速串行75 b/s波形进行了对比仿真。仿真结果表明,与美军标波形相比,改进波形的BER性能在AWGN信道及衰落信道下均有明显提升。Dual M-ary Orthogonal Spread Spectrum is a spetrum-spreading technology high spectrum efficiency,while HF（High Frequency） communication plays an important role in the field of communications.This paper describes basic principles of Dual M-ary Orthogonal Spread Spectrum system,and gives low data-rate 75 b/s waveforms in MIL-STD-188-110B of US active military specification.A HF low rate-data waveform based on Dual M-ary Orthogonal Spread Spectrum is proposed and designed,and simulation and comparison on the proposed waveforms and the low data-rate 75 b/s waveform in MIL-STD-188-110B indicate that the BER performance of the improved waveform is much better than that of MS 110B 75 b/s waveform in AWGN and fading channels.

关 键 词：双多进制正交扩频 短波 调制解调器 

分 类 号：TN911.3[电子电信—通信与信息系统]