Hi all, Can anybody please tell me if there is any different between the viterbi algorithm for Convoluntional code and that for Space time trellis codes. I have tried using the decoding approach for convoluntional and trellis coded modulation (TCM) to decode my 2 states BPSK space time trellis code but the ber that is producing is quite embarasing. Can anybody please help me out. I am writing my code in C++. It will be aprreciated if someone can lend a helping hand here.