基于蒙特卡罗方法的数字通信系统性能分析

The Performance Analysis of Digital Communication System Based on the Monte Carlo Method

结合数字通信系统的调制解调理论,按照蒙特卡罗的思想原则对数字通信系统进行建模仿真,可以短时、高效地分析影响数字通信系统性能的因素.文章分析了蒙特卡罗建模的思想,建立了基于蒙特卡罗思想的8PSK数字通信系统,应用MATLAB语言编程,分析了8PSK数字通信系统的误码率.通过仿真结果与理论值对比,验证数字通信系统的信噪比对误码率的影响.

Based on the principles of Monte Carlo,combined with the communication theo- ry of modulation and demodulation, the establishing of the Monte Carlo modeling simulation in digital communication system can analyzes the factors which influence the system performance with high efficiency. This paper analyzes the Monte Carlo modeling and establishes the Monte Carlo model for 8PSK communication system, and then analyzes the BER of 8PSK systems. Through the contrast of simulation results and the theoretical value, this paper verifies the influ-ence of SNR in communication system to BER by using the MATLAB.