【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。更多还原

【Abstract】 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.更多还原