Adaptive Selective State-Transition Decoding: A Combined Approach for Trellis Coded Modulation Scheme

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The authors are presenting a new suboptimum decoding strategy, namely, Adaptive Selective State-Transition Decoding (ASSTD) for Trellis Coded Modulation schemes transmission over band-limited ISI channels. The ASSTD is a combined approach provides an improved error performance over Reduced State Sequence Estimation (RSSE) techniques which are in practical use. The ASSTD operates on two different concepts and has the flexibility to work with a controlled complexity. Simulation results are obtained for static band-limited ISI channels. The results show that the ASSTD can be extended to fading channels.