Title :
Forward error correction for an enhanced SARSAT distress message
Author :
Kerr, Ron ; Hunt, Andrew ; Crozier, Stewart ; Lodge, John
Author_Institution :
Commun. Res. Centre Canada, Ottawa, ON
Abstract :
This paper presents a proposed enhancement to the current SARSAT distress message that is backward-compatible with the existing local user terminals (LUT) (i.e., ground stations) receivers. Additional coding is appended to the current message to allow for better performance for the new LUTs, soft-decision decoding is used in the evaluation of the current and enhanced format. Performance results on the AWGN channel are presented. It is shown that near maximum-likelihood performance is achieved for the new code format.
Keywords :
AWGN channels; Global Positioning System; forward error correction; maximum likelihood decoding; transponders; AWGN channel; Global Positioning satellite constellations; SARSAT transponders; enhanced SARSAT distress message; forward error correction; ground station receiver; local user terminals; maximum-likelihood performance; soft-decision decoding; AWGN channels; Concatenated codes; Error correction codes; Forward error correction; Low earth orbit satellites; Maximum likelihood decoding; Relays; Satellite ground stations; Table lookup; Transponders;
Conference_Titel :
Signal Processing for Space Communications, 2008. SPSC 2008. 10th International Workshop on
Conference_Location :
Rhodes Island
Print_ISBN :
978-1-4244-2572-3
Electronic_ISBN :
978-1-4244-2573-0
DOI :
10.1109/SPSC.2008.4686707
