A trellis-coded modulation system is provided in which the output of the trellis encoder is used to select a subset of a multidimensional QAM constellation. The selection process is performed such that a) the minimum square Euclidean distance between valid sequences of successive selected subsets is...http://www.google.fr/patents/US5418798?utm_source=gb-gplus-shareBrevet US5418798 - Multidimensional trellis-coded communication system
Multidimensional trellis-coded communication system
