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检索条件"主题词=Joint Source-channel coding"
621 条 记 录,以下是571-580 订阅
排序:
Trellis decoding for MPEG-4 streams over wireless channels
Trellis decoding for MPEG-4 streams over wireless channels
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Conference on Image and Video Communications and Processing
作者: Chen, QY Subbalakshmi, KP Stevens Inst Technol Dept Elect & Comp Engn Multimedia Syst Networking & Commun Lab Hoboken NJ 07030 USA
Most video coding standards, including MPEG-4, use variable length codes to encode the discrete cosine transform (DCT) coefficients of intra. frames and inter frames, and the motion vector information. Although variab... 详细信息
来源: 评论
Optimised constructions for variable-length error correcting codes
Optimised constructions for variable-length error correcting...
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IEEE Information Theory Workshop
作者: Lamy, C Paccaut, J THALES Commun France Gennevilliers France
An optimised construction of variable-length error-correcting codes (VLEC) is proposed in this paper. Compared to the state-of-the-art, the three main improvements consist first in improving the codewords search algor... 详细信息
来源: 评论
An end-to-end embedded approach for digital video multicast/broadcast over CDMA cellular networks
An end-to-end embedded approach for digital video multicast/...
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Conference on Visual Communications and Image Processing 2003
作者: Chan, YS Modestino, JW Rensselaer Polytech Inst Ctr Image Proc Res Troy NY 12180 USA
We investigate multicast/broadcast of digital video over spread-spectrum CDMA cellular networks, a platform targeted at various kinds of multimedia services. In particular, we propose an end-to-end embedded transmissi... 详细信息
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joint source channel rate-distortion analysis for adaptive mode selection and rate control in wireless video coding
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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 2002年 第6期12卷 511-523页
作者: He, ZH Cai, JF Chen, CW Sarnoff Corp Interact Media Grp Princeton NJ 08543 USA Univ Missouri Dept Elect Engn Columbia MO 65201 USA
In this paper, we first develop a rate-distortion (R-D) model for DCT-based video coding incorporating the macroblock (MB) intra refreshing rate. For any given bit rate and intra refreshing rate, this model is capable... 详细信息
来源: 评论
joint source-channel fractal image coding with unequal error protection
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OPTICAL ENGINEERING 2002年 第12期41卷 3168-3176页
作者: Charfi, Y Stankovic, VM Hamzaoui, R Haouari, A Saupe, D Univ Constance Dept Comp & Informat Sci D-78457 Constance Germany Univ Mohammed 5 LEESA Fac Sci Rabat Morocco
We propose a joint source-channel coding system for fractal image compression. We allocate the available total bit rate between the source code and the channel code using a Lagrange multiplier optimization technique. ... 详细信息
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Robust stack-run coding for low bit-rate image transmission over noisy channels
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IEEE SIGNAL PROCESSING LETTERS 2002年 第7期9卷 196-199页
作者: Pépin, C Raffy, P Gray, RM Docomo Commun Labs USA Inc San Jose CA 95110 USA R2 Technol Inc Sunnyvale CA 94087 USA Stanford Univ Dept Elect Engn Informat Syst Lab Stanford CA 94305 USA
We propose a multiresolution algorithm to jointly optimize a source coder and channel coder. The variable-rate source coder combines an optimal bit-allocation strategy and efficient stack-run coding. This compression ... 详细信息
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Adaptive joint H.263-channel coding for memoryless binary channels
Adaptive joint H.263-channel coding for memoryless binary ch...
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13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
作者: Navarro, A Tavares, J Univ Aveiro Inst Telecommun P-3810 Aveiro Portugal
The main purpose of this paper is to show that once the video source coding is dependent on the channel characteristics, better performance can be achieved in terms of reconstructed video quality. Our study considers ... 详细信息
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Hybrid digital-analog (HDA) joint source-channel codes for broadcasting and robust communications
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IEEE TRANSACTIONS ON INFORMATION THEORY 2002年 第5期48卷 1082-1102页
作者: Mittal, U Phamdo, N SUNY Stony Brook Dept Elect & Comp Engn Stony Brook NY 11794 USA
We consider the problem of transmitting a band-limited Gaussian source on an additive band-limited Gaussian noise channel. The well-known "threshold effect"dictates that the more powerful a code is, the more... 详细信息
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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
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Performances of linear tools and models for error detection and concealment in subband image transmission
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IEEE TRANSACTIONS ON IMAGE PROCESSING 2002年 第5期11卷 518-529页
作者: Labeau, F Desset, C Vandendorpe, L Macq, B McGill Univ Dept Elect & Comp Engn Montreal PQ H3A 2A7 Canada Catholic Univ Louvain Commun & Remote Sensing Lab Louvain Belgium
In this paper, we investigate the performances of Gaussian modeling and linear prediction tools for error detection and concealment in the transmission of still images. We consider the transmission of subband encoded ... 详细信息
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