DocumentCode :
1608831
Title :
Soft-combining schemes for JPEG image transmission over wireless channels
Author :
Holland, Ian David ; Zepernick, Hans-Jurgen
Author_Institution :
Australian Telecommun. Res. Inst., Australia
Volume :
3
fYear :
2002
fDate :
6/24/1905 12:00:00 AM
Firstpage :
1400
Abstract :
The evolution of digital mobile communications along with the increase of integrated circuit complexity has resulted in frequent use of error control coding to protect information against transmission errors. Soft decision decoding methods, such as the maximum a posteriori (MAP) decoding algorithm, process soft information and aim at minimizing bit error rate. This paper investigates application of a trellis-based MAP decoding approach to JPEG image transmission in wireless channels. When used with a soft-combining technique, it is shown to improve the performance significantly. This facilitates transmission of highly error-sensitive JPEG images in mobile radio systems, even when the ratio of average bit energy to noise power spectral density is quite low.
Keywords :
digital radio; error correction codes; error statistics; image coding; maximum likelihood decoding; mobile radio; trellis codes; visual communication; JPEG image transmission; bit error rate minimization; digital mobile communications; error control coding; error-sensitive images; maximum a posteriori decoding; mobile radio systems; performance; soft decision decoding; soft-combining technique; transmission errors; trellis-based MAP decoding; wireless channels; Australia; Bit error rate; Block codes; Decoding; Error correction; Image communication; Land mobile radio; Random variables; Signal to noise ratio; Streaming media;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
Type :
conf
DOI :
10.1109/VTC.2002.1002846
Filename :
1002846
Link To Document :
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