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检索条件"主题词=Source coding"
5593 条 记 录,以下是4761-4770 订阅
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Watermarking based on duality with distributed source coding and robust optimization principles
Watermarking based on duality with distributed source coding...
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IEEE International Conference on Image Processing
作者: J. Chou S.S. Pradhan L. El Ghaoui K. Ramchandran University of California Berkeley Berkeley CA USA
Inspired by a previously proposed constructive framework for the distributed source coding problem. We propose a powerful constructive approach to the watermarking problem, emphasizing the dual rules of distributed so... 详细信息
来源: 评论
Tradeoffs of source coding, channel coding and spreading in CDMA systems
Tradeoffs of source coding, channel coding and spreading in ...
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MILCOM, Military Communications Conference
作者: Qinghua Zhao P. Cosman L.B. Milstein Department of Electrical and Computer Engineering University of California San Diego USA
We consider a CDMA system consisting of an image source coder, a convolutional channel coder, an interleaver, and a direct sequence spreading module. With different allocations of bandwidth to source coding, channel c... 详细信息
来源: 评论
Wide-band CDMA for the UMTS/IMT-2000 satellite component
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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2002年 第2期51卷 306-331页
作者: Boudreau, D Caire, G Corazza, GE De Gaudenzi, R Gallinaro, G Luglio, M Lyons, R Romero-García, J Vernucci, A Widmer, H Commun Res Ctr Ottawa ON K2H 8S2 Canada Politecn Torino I-10129 Turin Italy Univ Roma Tor Vergata Dept Elect Engn I-00133 Rome Italy European Space Agcy Estec TOS ETC NL-2200 AG Noordwijk Netherlands Space Engn SPA I-00155 Rome Italy Sq Peg Commun Inc Kanata ON K2K 2A3 Canada European Space Agcy F-75738 Paris France Ascom Syst AG Technol Unit CH-5506 Magenwil Switzerland
This paper describes the main aspects relevant to the development of a third-generation radio transmission technology (RTT) concept identified as satellite wide-band CDMA (SW-CDMA), which has been accepted [1] by the ... 详细信息
来源: 评论
Channel-optimized soft trellis waveform coding
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2002年 第9期50卷 2306-2318页
作者: Haddad, T Yongaçoglu, A Zarlink Semicond Ottawa ON K2K 3H4 Canada Univ Ottawa Sch Informat Technol & Engn Ottawa ON K1N 6N5 Canada
In this paper, we provide a new fuzzy relaxation trellis codebook search algorithm over noisy channels. The new algorithm solves the problems associated with the LBG algorithm in the sense of delivering relatively low... 详细信息
来源: 评论
An improvement to multiple description transform coding
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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2002年 第11期50卷 2843-2854页
作者: Wang, Y Reibman, AR Orchard, MT Jafarkhani, H Polytech Univ Brooklyn NY 11201 USA AT&T Labs Res Florham Pk NJ 07932 USA Rice Univ Dept Elect & Comp Engn Houston TX 77005 USA Univ Calif Irvine Dept Elect & Comp Engn Ctr Pervas Commun Irvine CA USA
A multiple description transform coding (MDTC) method has been reported previously. The redundancy rate distortion (RRD) performance of this coding scheme for the independent and identically distributed (i.i.d.) two-d... 详细信息
来源: 评论
Design and performance of VQ-based hybrid digital-analog joint source-channel codes
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IEEE TRANSACTIONS ON INFORMATION THEORY 2002年 第3期48卷 708-720页
作者: Skoglund, M Phamdo, N Alajaji, F Royal Inst Technol Dept Signals Sensors & Syst SE-10044 Stockholm Sweden SUNY Stony Brook Dept Elect & Comp Engn Stony Brook NY 11794 USA Queens Univ Dept Math & Stat Kingston ON K7L 3N6 Canada Queens Univ Dept Elect & Comp Engn Kingston ON K7L 3N6 Canada
A joint source-channel hybrid digital-analog (HDA) vector quantization (VQ) system is presented. The main advantage of the new VQ-based HDA system is that it achieves excellent rate-distortion-capacity performance at ... 详细信息
来源: 评论
Optimal bit allocation for source/channel coding in joint trellis coded quantization/modulation
Optimal bit allocation for source/channel coding in joint tr...
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IEEE Wireless Communications and Networking Conference
作者: Usevitch, B Venkatraman, G Univ Texas Dept Elect & Comp Engn El Paso TX 79968 USA
Shannon showed that the problems of source and channel coding could be considered separately, without loss of performance, if complexity Is not an issue. Recent investigations have shown performance gain for more prac... 详细信息
来源: 评论
Performances analysis of a transmission system for H263 compressed and turbo-coded video sequences over a UMTS/TDD downlink
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ANNALS OF TELECOMMUNICATIONS 2002年 第11-12期57卷 1149-1170页
作者: Farah, J Marx, F Arndt, M France Telecom R&D DIH F-38243 Meylan France
The aim of this paper is to present a comparative study of the performances, in terms of the mean PSNR (Peak Signal to Noise Ratio), of a UMTS/TDD transmission system for H263 compressed and turbo-coded video sequence... 详细信息
来源: 评论
On the rate-distortion region for multiple descriptions
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IEEE TRANSACTIONS ON INFORMATION THEORY 2002年 第7期48卷 2012-2021页
作者: Fu, FW Yeung, RW Natl Univ Singapore Temasek Labs Singapore 119260 Singapore Chinese Univ Hong Kong Dept Informat Engn Shatin Hong Kong Peoples R China
In this paper, we study the problem of source coding with multiple descriptions, which is described as follows. Let X be a discrete memoryless source. There are two encoders, Encoders 1 and 2, and three decoders, Deco... 详细信息
来源: 评论
Huffman code based error screening and channel code optimization for error concealment in Perceptual Audio coding (PAC) algorithms
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IEEE TRANSACTIONS ON BROADCASTING 2002年 第3期48卷 193-206页
作者: Laneman, JN Sundberg, CEW Faller, C Bell Labs Lucent Technol Multimedia Commun Res Lab Murray Hill NJ 07974 USA
The class of Perceptual Audio coding (PAC) algorithms yields efficient and high-quality stereo digital audio bitstreams at bit rates from 16 kb/sec to 128 kb/sec (and even higher bit rates). To avoid "pops and cl... 详细信息
来源: 评论