BCH码分组交织参数盲识别  

Blind Identification of Parameters of Packet Interleaver Based on BCH Codes

作　　者：张世会[1] 张天骐[1] 闫振华[1] 欧旭东[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：《电视技术》2015年第15期88-93,共6页Video Engineering

基　　金：国家自然科学基金项目(61371164;61275099;61102031);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(CSTC2011jjj140002);重庆市自然科学基金项目(CSTC2012JJA40008);重庆市教育委员会科研项目(KJ120525;KJ130524);重庆市研究生科研创新项目(CYS14140)

摘　　要：针对BCH码分组交织参数盲识别容错性能差和计算量大的问题,提出一种基于高斯列消元和深度谱相结合的BCH码分组交织参数盲识别方法。首先利用高斯列消元方法识别交织长度和同步参数,确定交织位置关系;其次根据交织位置关系得到码长后,利用深度谱识别生成矩阵,对生成矩阵进行高斯消元得到典型生成矩阵和生成多项式。该方法可以较好地识别BCH码分组交织的交织长度、同步参数、交织位置关系、BCH码码长及生成多项式。仿真实验表明,在误码率为1×10-2的情况下,对高码率BCH码分组交织的识别概率高于70%。In order to solve the blind identification problem of the packet interleaver based on BCH code, a blind identification ap- proach based on Binary Colunm Gaussian Elimination （BCGE） and depth distribution is proposed in this paper. Firstly, the length and synchronization of interleaver are identified by BCGE, and then the position relationship is determined. Secondly, code length is determined ＇after determining the position relationship, then, the generator matrix is recognized by the feature of depth distribu- tion, typical generator matrix is produced by using Gauss Elimination. The recognition has good expression at identification the in- terleaver length, synchronization parameters, position relationship of interleaver, code length and generator matrix. Simulation ex- perience shows that the method has better error-tolerance and the recognition has better performance in 0.01 BER.

关 键 词：BCH码 分组交织 高斯列消元 深度谱 

分 类 号：TN911.22[电子电信—通信与信息系统]