DocumentCode :
178157
Title :
Partial CRC-assisted error correction of AIS signals received by satellite
Author :
Prevost, Raoul ; Coulon, M. ; Bonacci, David ; LeMaitre, Julia ; Millerioux, Jean-Pierre ; Tourneret, Jean-Yves
Author_Institution :
INP-ENSEEIHT/IRIT, Univ. of Toulouse, Toulouse, France
fYear :
2014
fDate :
4-9 May 2014
Firstpage :
1951
Lastpage :
1955
Abstract :
This paper deals with the demodulation of automatic identification system (AIS) signals received by a satellite. More precisely, an error correction algorithm is presented, whose computational complexity is reduced with respect to that of a previously considered approach. This latter approach makes use of the cyclic redundancy check (CRC) of a message as redundancy, in order to correct transmission errors. In this paper, the CRC is also considered as a correction tool, but only a part of it is used for that purpose; the remaining part is only used as an error detection means. This novel approach allows the decoding performance to be adapted to the noise power, and provides a reduction of the computational complexity. Simulation results obtained with and without complexity optimization are presented and compared in the context of the AIS system.
Keywords :
computational complexity; cyclic redundancy check codes; decoding; demodulation; error correction; radio transceivers; satellite communication; AIS signals; automatic identification system; computational complexity; cyclic redundancy check; decoding performance; demodulation; error correction algorithm; noise power; partial CRC-assisted error correction; satellites; transmission errors; transmitter characteristics; Complexity theory; Demodulation; Error correction; Receivers; Satellites; Viterbi algorithm; AIS; CRC; Viterbi decoding; optimization; satellite;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
Type :
conf
DOI :
10.1109/ICASSP.2014.6853939
Filename :
6853939
Link To Document :
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