一种卷积与交织编码直扩系统的性能仿真  

Performance Simulation of a Convolution and Interleaving Coding Based DSSS Communication System

作　　者：熊最[1] 王可人[1] 金虎[1] 

机构地区：[1]电子工程学院,安徽合肥230037

出　　处：《无线电工程》2012年第3期12-13,20,共3页Radio Engineering

摘　　要：为了分析卷积纠错编码与不同的交织方式相结合时直扩系统的性能,设计了一种基于卷积与交织相结合的纠错编码直扩通信系统,并利用Matlab/Simulink仿真平台建立了系统仿真模型,仿真分析了在高斯白噪声信道条件下,随机交织、矩阵交织加通用块交织2种交织方式分别与卷积编码相结合时的直扩系统性能。仿真结果表明,在高斯白噪声信道中,与未编码的直扩系统相比,所设计的采用卷积与2种交织相结合的编码直扩系统均能在信噪比高于-1.35 dB时获得更好的系统性能。To analyze the performance of direct sequence spread spectrum communication system when different kinds of interleaving methods are integrated with convolution coding,a convolution coding and interleaving based error correction coding DSSS communication system is designed,and the system model is built in the Matlab/Simulink platform.Random interleaving and Matrix interleaving combined with general block interleaving are considered respectively in the AWGN channel condition.The simulation results indicate that as compared with uncoded DSSS communication system,the performance of convolutionally coded DSSS communication system in conjunction with two different interleaving methods designed in this paper is better when signal noise ratio is-1.35 dB or more.

关 键 词：卷积码 交织 纠错编码 直接序列扩频 

分 类 号：TN914.42[电子电信—通信与信息系统]