Title :
Design of ring-TCM schemes of rate m/n over N-dimensional constellations
Author :
Moreira, J. Castineira ; Edwards, R. ; Honary, B. ; Farrell, P.G.
Author_Institution :
Sch. of Eng., Comput. & Math. Sci., Lancaster Univ., UK
fDate :
10/1/1999 12:00:00 AM
Abstract :
The authors analyse a new topology for designing ring-TCM schemes over N-dimensional constellations. The squared free distance of these codes is optimised. Thus optimisation is performed for AWGN channels. The generalised topology is studied for M-PSK and N-dimensional constellations. An improvement is obtained by using an N-dimensional constellation, in comparison with its M-PSK constellation counterpart. This improvement is more evident for higher level constellations
Keywords :
AWGN channels; convolutional codes; optimisation; phase shift keying; trellis coded modulation; AWGN channels; M-PSK constellation; N-dimensional constellations; codes; multilevel convolutional encoder; optimisation; rate m/n ring-TCM schemes design; squared free distance; topology;
Journal_Title :
Communications, IEE Proceedings-
DOI :
10.1049/ip-com:19990621
