基于DSP的系统卷积码盲识别  

Blind Recognition of Systematic Convolutional Code Based on DSP

作　　者：苗成林[1] 李彤[1] 吕军[1] 

机构地区：[1]装甲兵工程学院信息工程系,北京100072

出　　处：《计算机系统应用》2015年第4期257-260,共4页Computer Systems & Applications

摘　　要：研究了一种系统卷积码的盲识别算法,该算法通过建立数据矩阵,遍历所有可能的矩阵形式,分析矩阵秩特性的方法实现对信道盲参数识别,参数包括码长、码字起点、码率、校验多项式和生成多项式.并提出了将该算法移植到DSP芯片中,将软件仿真移植到硬件平台,在CCS软件中优化算法,完成对1/2码率的系统卷积码盲识别仿真.为实现快速算法,运用在实际工程提供支持.This paper researches an algorithm about the blind recognition of systematic convolutional code. By building data matrix and analyzing the rank property of the matrix, the algorithm can realize the blind recognition of channel parameters, which include the code length, code beginning, code rate, check polynomial as well as the generating polynomial. This paper also proposes the idea to transfer the algorithm to DSP. After transferring the software codes onto the hardware platform, we optimize the algorithm in the software CCS and then f＇mish the simulation of the blind recognition of systematic convolutional code with code rate equals 1/2. It offers support to the fast implementation of the algorithm in actual projects.

关 键 词：卷积码 盲识别 DSP 秩特性 

分 类 号：TN911.22[电子电信—通信与信息系统]