一种新型混沌键控调制方案——CD-FM-CDSK  

A New Kind of CD-FM-CDSK Chaos Shift Keying Modulation System

作　　者：张刚[1] 崔妮婷 李泽金[1] 

机构地区：[1]重庆邮电大学信号与信息处理重庆市重点实验室,重庆400065

出　　处：《科学技术与工程》2014年第32期232-236,共5页Science Technology and Engineering

基　　金：国家自然科学基金项目(61071196;61102131);教育部新世纪优秀人才支持计划项目(NCET-10-0927);信号与信息处理重庆市市级重点实验室建设项目(CSTC2009CA2003);重庆市杰出青年基金项目(CSTC2011jjjq40002);重庆市自然科学基金项目(CSTC2010BB2398;CSTC2010BB2409;CSTC2010BB2411;CSTC2012JJA40008);重庆市教育委员会科研项目(KJ120525;KJ130524);国家留学基金资助

摘　　要：针对现有的相关延迟键控(CDSK)混沌键控通信系统存在的比特能量不恒定、信息传输率低和保密性不强问题,提出了一种新型的混沌键控调制方案——CD-FM-CDSK(相关延迟-调频相关延迟键控)。该方案在原有CDSK系统基础上加入了混沌信号FM调制、数字序列串并转换技术。经仿真对比分析,该系统具有更加良好的性能,它兼有CDSK保密性强和FMCDSK误码率低且传输速率高的优点,为混沌保密通信应用于高速信息传输通信提供了光明前景。For existing problems of variable bit energy, low data transfer rate and weak security in CDSK chaos shift keying system, a new type of chaos shift keying modulation scheme is proposed with the name of CD-FM-CD- SK （correlation delay-frequency modulated-correlation delay shift keying）. Based on the original CDSK system, the new scheme adapts frequency modulation and serial-to-parallel conversion technologies. According to the simulation and comparative analysis, the system has more favorable performance, which has better advantages such as strong security in CDSK, low bit error rate in FM-CDSK and high transmission rate. All these features provide a brighter prospect for chaotic security communication to be applied in high-speed communication.

关 键 词：混沌保密通信 混沌键控 CD-FM-CDSK 

分 类 号：TN911.3[电子电信—通信与信息系统]