MLSE for mobile radio channels.

摘要

An equalizer/decoder (Fig. 12) for a communication channel presenting impairments to error-free reception of transmitted symbols includes a modified Viterbi decoder (930) operating on samples of received signals in a plurality of equivalent subchannels (on 910). Estimates of each of the subchannels are updated using a locally best estimate (960) in the Viterbi trellis processing, thereby avoiding delay in updating channel estimates in a rapidly changing channel such as a digital cellular communications channels. A leaky predictor channel updating technique also proves advantageous in an alternative embodiment. <IMAGE>