卫星通信中GMSK信号的解调算法研究

摘要

本文对高斯最小频移键控(GMSK)突发信号的解调算法进行了研究,主要涉及不同解调算法的性能比较.详细比较了不同频偏和不同采样点偏差下各种解调算法的性能差异并给出相关仿真结果.文章介绍了信号的捕获算法,包括频率估计和位同步算法,并给出频率估计结果.%The demodulation algorithm on GMSK (Gaussian filtered minimum shift keying) burst signal and performance comparison about different algorithms are researched. The performance on different frequency offsets and sample offsets is compared in detail and simulation result is given. The signal capture algorithm is described including frequency estimation and symbol timing algorithm. The simulation result of frequency estimation is given.