AbstractThis study represents the sequel and conclusion of a previous one already published in this Journal a few issues ago.1In that article, we tackled the problem of evaluating theoretically the performance of an adaptive MLSE receiver for MSK signals on a frequency‐selective stationary radio propagation channel, and we validated the theoretical findings (in the form of upper and lower bounds to the BER of the receiver) by means of computer simulations. In the present paper, we report on the performance of the very same scheme of channel‐estimator‐plus‐Viterbi‐equalizer receiver for mobile communications in a more realistic operating environment. In particular, we completely encompass here thegroupe spécial mobile(GSM) transmission format, based on the Gaussian minimum shift keying (GMSK) modulation scheme and on narrowband time‐division multiple access (TDMA) transmission. Also, we remove the assumption of a time‐invariant propagation channel, assuming the recommended standard GSM channels as benchmark transmission conditions. Finally, with the aid of extensive computer simulations, we analyse the sensitivity of the MLSE receiver to unwanted co‐channel and adjacent‐channel interference coming from other users of the mobile c