Paper: | SPCOM-P3.8 | ||
Session: | Joint Source/Channel Coding and Quantization | ||
Time: | Wednesday, May 19, 09:30 - 11:30 | ||
Presentation: | Poster | ||
Topic: | Signal Processing for Communications: Joint Source-Channel Coding | ||
Title: | OPTIMAL VLC SEQUENCE DECODING EXPLOITING ADDITIONAL VIDEO STREAM PROPERTIES | ||
Authors: | Hang Nguyen; Alcatel | ||
Pierre Duhamel; CNRS | |||
Jérôme Brouet; Alcatel | |||
Denis Rouffet; Alcatel | |||
Abstract: | Joint source-channel decoding of Variable Length Codes (VLC) for image and video streaming transmission over unreliable links, such as wireless networks, is a subject of increasing interest. This paper proposes a optimum Maximum Likelihood decoder of VLC sequences which exploits additional inherent redundancy in the source information, namely (i)the correlation between bits inside a VLC codeword as well as (ii) the correlation between VLC codewords of a VLC sequence unit (e.g. corresponding to one image block). The demonstration of the optimality of the proposed decoder are outlined. Finally, performance results for improving video decoding over AWGN channels are presented and compared to the prefix-based decoder as well as the recently proposed VLC decoders. | ||
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