通过阐述通信系统的基础理论，着重分析信道理论及信道编码方式，采用蒙特卡罗计算机仿真方法，利用MATLAB 提供的可视化工具Simulink 建立了信道编码的仿真模型，详细讲述了各编码方式的设计。在给定仿真条件下，运行了仿真程序，对二进制双极性通信系统中的几种基本信道编码进行了仿真性能测试和讨论,并从实际角度出发，对扩频通信中的信道编码进行了初步仿真，得出了在二进制双极性扩频通信系统中采用级联码，能够实现信道复用和误码性能双赢的结论。-Elaborate communication system is the basis of the theory focuses on the analysis of channel theory and channel coding way, using Monte Carlo computer simulation method provided by MATLAB visualization tool Simulink established channel coding simulation model, and details about the design of each coded way of . The simulation conditions of the given run a simulation program, several basic channel encoded binary bipolar communication system simulation performance tests and discussion, and from the practical point of view, and channel encoded in a spread spectrum communication Preliminary simulation obtained concatenated codes in binary bipolar spread spectrum communication system, able to achieve a win-win conclusion channel multiplexing and error performance.