Title :
Implementation of a multi-D trellis decoder for a 155 Mbit/s concatenated codec
Author :
Pietrobon, Steven S. ; Kasparian, Jeffrey J. ; Gray, Paul K.
Author_Institution :
Space Centre for Signal Process., Univ. South Australia, The Levels, SA, Australia
fDate :
27 Jun-1 Jul 1994
Abstract :
An implementation of a 16 state, rate 8/9 six-dimensional (6-D) 8PSK rotationally invariant trellis decoder for use in a concatenated codec is described, The concatenated codec allows transmission of STM-1 signals (at the 155.52 Mbit´s information rate) over a 72 MHz satellite transponder. The inner trellis decoder is used with an outer (255,239) Reed-Solomon (RS) block decoder. The trellis decoder operates at 165.93 Mbit/s and currently has an implementation loss of only 0.2 dB. The concatenated codec achieves a bit error ratio of 10-10 at an EbN0 of 8.2 dB (assuming an ideal modem and AWGN channel)
Keywords :
Reed-Solomon codes; Viterbi decoding; block codes; codecs; concatenated codes; phase shift keying; satellite communication; transponders; trellis codes; 0.2 dB; 155 Mbit/s; 72 MHz; 8.2 dB; AWGN channel; STM-1 signals; Viterbi decoding; bit error ratio; concatenated codec; implementation loss; inner trellis decoder; modem; multi-D trellis decoder; outer Reed-Solomon block decoder; satellite transponder; signal transmission; six-dimensional 8PSK rotationally invariant trellis decoder; Australia; Bandwidth; Codecs; Concatenated codes; Convolutional codes; Iterative decoding; Modulation coding; Satellite broadcasting; Signal processing; Transponders;
Conference_Titel :
Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on
Conference_Location :
Trondheim
Print_ISBN :
0-7803-2015-8
DOI :
10.1109/ISIT.1994.395092
