Performance Analysis of Asymmetric Constellation in Concatenation with Trellis Coded Modulation for use in Intelligent Systems
Abbas Firoz Saboowala · OhioLink ETD Center (Ohio Library and Information Network) · 2011
carrying out TCM encoding and decoding.Towards this, the following steps are performed; designing the convolutional encoder based on Ungerboeck"s design scheme, using a signal mapper to map the modulation scheme, making use of Ungerboeck"s set partitioning technique to obtain the maximum distance between signals [2], obtaining the trellis which maximizes the performance, and carrying out decoding using the Viterbi algorithm [18].The method used in this thesis yields an improvement in error, minimum distance and coding gain as compared to those of conventional trellis coded modulation technique.