Title :
MAP decoder design for Distributed Video Coding in error prone wireless channels
Author :
Weerakkody, W.A.R.J. ; Fernando, W.A.C. ; Martínez, J.L. ; Cuenca, P. ; Quiles, F.
Author_Institution :
Sch. of Eng. & Design, Brunel Univ., Uxbridge
Abstract :
In this paper MAP (maximum a posteriori) algorithm in the turbo decoder has been modified to use with the distributed video coding (DVC) decoder, when the parity bit stream is transmitted over a noisy/fading channel. The proposed modification allows independent probability distributions for the systematic and parity components at the input to the turbo decoder. The designed MAP decoder has been tested with an AWGN and with a WCDMA channel.
Keywords :
fading channels; maximum likelihood estimation; turbo codes; video coding; AWGN; WCDMA channel; distributed video coding; error prone wireless channels; independent probability distributions; maximum a posteriori decoder design; noisy/fading channel; parity bit stream; AWGN; Additive white noise; Decoding; Fading; Gaussian noise; Multiaccess communication; Probability distribution; Streaming media; Testing; Video coding; Distributed video coding; MAP decoder; Turbo coding;
Conference_Titel :
Industrial and Information Systems, 2007. ICIIS 2007. International Conference on
Conference_Location :
Penadeniya
Print_ISBN :
978-1-4244-1151-1
Electronic_ISBN :
978-1-4244-1152-8
DOI :
10.1109/ICIINFS.2007.4579206
