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本文介绍了泛欧数字蜂窝移动通信系统ＧＳＭ（ＧｒｏｕｐＳｐｅｃｉａｌＭｏｂｉｌｅ）的数字接收机的主要原理。在ＧＳＭ系统中，数字信息受无线电移动信道多路径衰落影响，故依据Ｖｉｔｅｒｂｉ算法补偿多路径传播和多普勒频移引起的选择性畸变，而提出了最大似然序列估计（ＭＬＳＥ）接收机，该接收机的性能可利用移动通信信道仿真器来评价。
This article describes the main principles of digital receivers for the Pan-European digital cellular mobile communication system GSM (GroupSpecialMobile). In the GSM system, the digital information is affected by the multipath fading of the radio mobile channel. Therefore, a Maximum Likelihood Sequence Estimation (MLSE) receiver is proposed based on the Viterbi algorithm to compensate for the selective distortion caused by multipath propagation and Doppler shift. The receiver’s performance can be evaluated using a mobile communication channel simulator.