一种基于正弦映射的混沌交织器设计及应用  

Design and application of sine-map chaotic interleaver

作　　者：陈朝[1,2] 汤天浩[1] 

机构地区：[1]上海海事大学中法联合伽利略系统与海上安全智能交通研究所,上海200135 [2]中国地质大学机械与电子信息学院,武汉430074

出　　处：《计算机应用研究》2010年第11期4276-4278,共3页Application Research of Computers

基　　金：国家交通运输部科技项目(2009-329-810-030);上海市教委科研资助项目(07ZZ102;08YZ109);上海市教委重点学科资助项目(J50602)

摘　　要：移动信道编码中交织器的设计直接影响Turbo码的距离谱和性能,其主要作用是提高低重序列的输出码重和减小译码输出之间的相关性。随机交织器在数据帧较长时性能比较好,通过码序列位置重置实现交织,利用正弦函数的混沌映射有很好的随机性和瞬时正交性的特点,实现了一种新型混沌随机交织器,提高了交织器的误码率性能,并且在伽利略卫星系统中应用达到接近理论值的编码效率和误码率的特性。The mobile channel coding interleaver design directly affects the distance spectrum of Turbo codes and performance.Its main role is to improve the low-weight sequence of output code weight and reduce the correlation between decoding output.Random interleaver performance in the data frame is longer is better achieved.Through the reset code sequence location cutting,chaotic map using the sine function had a good random and transient characteristics of orthogonality to achieve a new type of chaotic random interleaver,improved BER performance about interleaver,and the application of the Galileo satellite system up closed to the theoretical value of the coding efficiency and error rate characteristics.

关 键 词：正弦映射 随机交织器 TURBO码 伽利略系统 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]