Title :
Geometrically uniform trellis codes based on multidimensional unbalanced QPSK
Author :
Benedetto, S. ; Garello, R. ; Mondin, M.
Author_Institution :
Dipartimento di Elettronica, Politecnico di Torino, Italy
fDate :
29 Nov-2 Dec 1993
Abstract :
Geometrically uniform trellis codes based on L×UQPSK (multidimensional unbalanced quaternary PSK) constellations obtained as a result of an extensive search are presented. The codes use signal sets with 1⩽L⩽4, and are able to transmit information rates in bits per two dimensions Reff ranging from 1 to 1.67. The codes obtained improve up to 1.25 dB over the asymptotic performances of the best codes known so far based on balanced L×QPSK constellations. The codes performance in terms of error event probability are also presented
Keywords :
channel capacity; error statistics; phase shift keying; trellis codes; L×UQPSK; error event probability; geometrically uniform trellis codes; information rates; multidimensional unbalanced QPSK; multidimensional unbalanced quaternary PSK; signal sets; Constellation diagram; Convolutional codes; Electronic mail; Information rates; Modulation coding; Multidimensional systems; Performance evaluation; Phase shift keying; Quadrature phase shift keying; Signal generators;
Conference_Titel :
Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0917-0
DOI :
10.1109/GLOCOM.1993.318312
