MAP-decoder of TTCM-signals with the bidirectional equalization

The maximum a posteriori decoder (MAP- decoder) for signal-sequence with turbo-trellis-coded modulation (TTCM) in channels with inter-symbol interference (ICI) are presented. The peculiarity of the decoder is the use of estimation signal-amplitudes, trellis-decision-feed-back with rib-metrics-computing, as well as bidirectional equalization.