MSK调制技术分析与性能仿真

摘要

In order to solve the problem that the radio spectrum resources become scarce increasingly,this paper presents a mini⁃mum⁃shift keying(MSK)modulation⁃demodulation scheme suitable to narrow⁃band transmission.By analyzing and studying MSK modula⁃tion⁃demodulation technology,the system model of MSK is introduced. The clock synchronization algorithm and carrier synchronization algorithm are analyzed in detail and improved,and the simulation is performed by using Matlab software.The results show that the MSK modulation⁃demodulation scheme can improve spectrum utilization and save effectively the frequency band resource, comparing with BPSK.%针对当前射频频谱资源日益紧张的问题，给出了一种适于窄带传输的基于最小频移键控（ MSK）的调制解调方法。通过对MSK调制解调技术的分析与研究，给出系统的模型。对接收端的时钟同步算法和载波同步算法进行了详细分析与改进，并利用Matlab软件进行了仿真。与一般相位调制BPSK的性能进行比较，进一步说明了MSK调制解调方法在通信系统传输中可以提高频谱利用率，有效节省频带资源。