基于GNURadio的MPSK通信系统的实现及性能分析

Implementation and performance of MPSK communication system based on GNU Radio

数字通信系统中广泛采用MPSK(多进制相移键控)调制,因此分析MPSK通信系统性能是研究不同业务类型的通信系统性能的基础。首先分析了MPSK调制、解调原理及通信系统的基本结构,用软件无线电工具GNURadio及其硬件平台USRP设计并实现了简单的MPSK通信系统。在此系统基础上,对MPSK通信系统的信噪比、误码率、码元传输速率进行分析,然后对系统中的编解码器、同步等模块对系统性能的影响展开分析。

MPSK modulation is an important modulation method widely used in modern communication systems,and the analysis of MPSK communication system performance is representative.Firstly,the principle of MPSK modulation and demodulation and the basic structure of communication system are analyzed,and a simple MPSK communication system is designed and implemented by using software radio tool GNURadio and its hardware platform USRP.On the basis of this system,firstly,the signal-to-noise ratio,error rate,symbol transmission rate of MPSK communication system are analyzed,and then the influence of codec,synchronization modules on system performance is analyzed.