Title :
Joint iterative-detection of reversible variable-length coded Constant Bit Rate vector-quantized video and Coded Modulation
Author :
Ng, S.X. ; Maunder, R.G. ; Wang, J. ; Yang, L.-L. ; Hanzo, L.
Author_Institution :
Sch. of ECS, Univ. of Southampton, Southampton, UK
Abstract :
Joint video-coding, channel-coding and modulation schemes based on a Constant Bit Rate (CBR) video codec, Variable Length Codes (VLCs) as well as Trellis Coded Modulation (TCM) and Turbo TCM (TTCM) schemes are proposed. These arrangements have a latency of a single video frame duration. A significant coding gain is achieved without bandwidth expansion with the advent of iterative decoding exchanging extrinsic information between the VLC and the TCM or TTCM decoders. The performance of the proposed schemes was evaluated for transmission over uncorrelated Rayleigh fading channels and the best scheme was found to be about 3 dB from the Rayleigh channel´s capacity limit.
Keywords :
Rayleigh channels; channel coding; iterative decoding; trellis coded modulation; variable length codes; vector quantisation; video codecs; video coding; CBR video codec; Rayleigh fading channels; VLC; channel coding; constant bit rate vector-quantized video; constant bit rate video codec; iterative decoding; joint iterative-detection; joint video coding; modulation schemes; reversible variable-length coded; trellis coded modulation; turbo TCM schemes; Decoding; Fading; Joints; Narrowband; Niobium;
Conference_Titel :
Signal Processing Conference, 2004 12th European
Conference_Location :
Vienna
Print_ISBN :
978-320-0001-65-7
