Title :
Four state binary QAM trellis code better than known codes
Author :
de Almeida, Celso ; Palazzo, R.
Author_Institution :
Univ. Estadual de Campinas, Sao Paulo, Brazil
fDate :
4/1/1993 12:00:00 AM
Abstract :
Presents a new one-memory quaternary four-state trellis code, and its four-state binary equivalent code based on a QAM constellation which is 0.52 dB better than the four-state Ungerboeck code.
Keywords :
amplitude modulation; encoding; information theory; trellis codes; QAM constellation; four-state binary equivalent code; one-memory quaternary four-state trellis code;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930423
