Methods of channel-optimised trellis source coding for the AWGN channel
Improvements to channel-optimised trellis source coding for the AWGN channel are obtained by using, in various forms, real or 'soft' channel information. The proposed 1 bit/sample systems use a channel-optimised encoder matched to (1) a simple decision feedback detector, (2) an expanded codebook with 2-bit quantized information and (3) an optimum non-linear estimator decoder. The third system is further improved by considering vector alphabets and both constant and average energy constrained 2D signal constellations.<<ETX>>