摘要
随着无线通信技术的进步,人们对无线通信的可靠性要求越来越高。纠错编码中的Turbo码具有接近香农限的优异纠错性能,被广泛应用于各种通信系统中。分析Turbo码的编码器和译码器的结构及编译码原理,介绍带CRC校验终止机制的Turbo译码,基于迭代译码和CRC校验终止的流程,设计了编译码性能仿真Matlab程序。根据仿真结果,分析迭代次数、CRC校验终止机制等因素对Turbo译码性能的影响,为相关系统的设计优化提供参考。
With the progress of wireless communication technology, the reliability requirement wireless communication by the people becomes even higher. The structure and principle of Turbo encoder and decoder is analyzed, Turbo decoding with CRC checking termination mechanism and the process based on iterative decoding and termination of CRC check discussed, Matlab program for encoding and decoding performance simulation also designed. Based on simulation results, the influence of such factors as the number of iterations and the termination mechanism of CRC on the performance of Turbo decoding is analyzed, thus to provide a reference for the design optimization of related systems.
出处
《通信技术》
2017年第7期1371-1374,共4页
Communications Technology
