New views of transfer function based performance analysis of coded modulations

Transfer function methods are attractive in the performance analysis of coded modulations since they allow averaging of all possible error event probabilities. However, they can be computationally intensive when the code has a large number of states. A method to reduce the complexity of the transfer function method is proposed. In addition, transfer function methods for computing the upper bound of the bit error probability in a flat fading channel are presented. These bounds are simple and tight at high SNR.