DS-SS通信扩频码特性分析  

Analysis of Spread Spectrum Codes Characteristics for DS-SS Communication

作　　者：宋成瑞 叶伟 盛世强 SONG Cheng-rui;YE Wei;SHENG Shi-qiang(Aerospace Command Academy, Space Engineering University,Beijing 101416,China;Department of Electronics and Optical Engineering, Space Engineering University, Beijing 101416, China)

机构地区：[1]航天工程大学航天指挥学院,中国北京101416 [2]航天工程大学电子与光学工程系,中国北京101416

出　　处：《科技视界》2018年第7期1-5,共5页Science & Technology Vision

摘　　要：对直扩信号扩频码的特性进行了深入研究,概述了传统扩频码的基本特性,针对目前在直扩通信中应用越来越广泛的混沌码,重点讨论了混沌扩频码映射的选取,在此基础上,深入分析了混沌码的初值敏感性、平衡性以及自相关特性,并从平衡性、游程特性和相关特性三个方面对混沌扩频码和传统扩频码的性能进行了对比分析和仿真验证,讨论了各自的优缺点,为DS-SS通信中扩频码的选择和应用提供了理论支撑。The characteristics of DS-SS signal spreading codes are studied in detail.The basic characteristics of traditional spreading codes are summarized.The chaotic codes that are more and more widely used in DS-SS communication are discussed.The chaotic spreading codes are mainly discussed.On the basis of the selection of the mapping,the initial value sensitivity,balance and autocorrelation properties of the chaotic codes are analyzed in depth,and the chaotic spreading codes and the traditional spreading codes are compared in terms of balance,run-length characteristics and correlation characteristics.The performance was compared and verified by simulation.The advantages and disadvantages of each were discussed,the research provides theoretical support for the selection and application of spreading codes in DS-SS communication.

关 键 词：直扩 扩频码 混沌码 自相关 

分 类 号：TN911.6[电子电信—通信与信息系统]