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检索条件"主题词=adaptive coding"
562 条 记 录,以下是451-460 订阅
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Tunstall adaptive coding and miscoding
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IEEE TRANSACTIONS ON INFORMATION THEORY 1996年 第6期42卷 2167-2180页
作者: Fabris, F Sgarro, A Pauletti, R UNIV TRIESTE DIPARTIMENTO SCI MATEMAT TRIESTE ITALY PAULETTI PROFESS PONTE NELLE ALPI BELLUNO ITALY
In the first part of this paper, we tackle the case where a variable length-to-block Tunstall code is used to encode the wrong source (miscoding). It turns out that, exactly as it happens in the case with Huffman codi... 详细信息
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Impact of network routing on the end-to-end transmission quality of cellular and PCS connections
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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 1998年 第4期47卷 1227-1233页
作者: Dimolitsas, S Corcoran, FL Ravishankar, C Comsat Labs Clarksburg MD 20871 USA
Long-distance and especially international calls involve an increasing number of multilink circuits of cellular, personal communications, mobile satellite, and public switched telephone network (PSTN)-type connections... 详细信息
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Smart codec: an adaptive packet data link
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IEE PROCEEDINGS-COMMUNICATIONS 1998年 第3期145卷 180-185页
作者: Fairhurst, G Pang, SL Wan, PS Univ Aberdeen Dept Engn Aberdeen AB24 3UE Scotland
An adaptive convolutional code-rate system for packet data is presented which adapts the level of coding to overcome the effect of varying levels of noise. The system utilises the frame structure of packet data to syn... 详细信息
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Deterministic Channel Modeling and Long Range Prediction of Fast Fading Mobile Radio Channels
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IEEE COMMUNICATIONS LETTERS 1998年 第9期2卷 254-256页
作者: Eyceoz, Tugay Duel-Hallen, Alexandra Hallen, Hans N Carolina State Univ Dept Elect & Comp Engn Raleigh NC 27695 USA N Carolina State Univ Dept Phys Raleigh NC 27695 USA
In wireless communication systems, the direct signal and the reflected signals form an interference pattern resulting in a received signal given by the sum of these components. They are distinguished by their Doppler ... 详细信息
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adaptive coding using finite state hierarchical table lookup vector quantization with variable block sizes
Adaptive coding using finite state hierarchical table lookup...
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Asilomar Conference on Signals, Systems & Computers
作者: S. Mehrotra N. Chaddha R.M. Gray Information Systems Laboratory University of Stanford Stanford CA USA
We present an algorithm for performing adaptive vector quantization with memory. By using the memory between adjacent blocks which are encoded, we can take advantage of the correlation between adjacent blocks of pixel... 详细信息
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Channel activation with adaptive coding rate and processing gain control for cellular DS/CDMA systems
Channel activation with adaptive coding rate and processing ...
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IEEE Conference on Vehicular Technology (VTC)
作者: S. Abeta S. Sampei N. Morinaga Faculty of Engineering Osaka University Suita Osaka Japan
This paper proposes a CDMA system using soft power control, adaptive controls for coding rate and processing gain, and channel activation to achieve high capacity cellular systems. The proposed system controls the pro... 详细信息
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Lossy adaptive coding of motion vectors with global camera motion compensation
Lossy adaptive coding of motion vectors with global camera m...
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Asilomar Conference on Signals, Systems & Computers
作者: X.C. Chen N. Chaddha Computer System Laboratory University of Stanford Stanford CA USA
We propose a motion estimation and coding scheme that combines global camera motion estimation with a scene adaptive coder based on a quadtree structure with entropy-constrained vector quantization (ECVQ). Global came... 详细信息
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Modeling and low-complexity adaptive coding for image prediction residuals
Modeling and low-complexity adaptive coding for image predic...
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IEEE International Conference on Image Processing
作者: N. Merhav G. Seroussi M.J. Weinberger Hewlett Packard Laboratories Company Palo Alto CA USA
This paper elaborates on the use of discrete, two-sided geometric distribution models for image prediction residuals. After providing achievable bounds for universal coding of a rich family of models, which includes t... 详细信息
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Astrolink/sup TM/ satellite system overview
Astrolink/sup TM/ satellite system overview
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IEEE Conference on Aerospace
作者: E. Elizondo R. Gobbi A. Modelfino Lockheed Martin Telecommunications Sunnyvale CA USA
Lockheed Martin's Astrolink/sup TM/ system is currently in active development. Astrolink will provide global bandwidth-on-demand digital communications utilizing a constellation of nine Ka-Band geosynchronous sate... 详细信息
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A fast adaptive cosine transform image coding technique
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IETE JOURNAL OF RESEARCH 1997年 第4期43卷 295-301页
作者: Kumar, S Vijay, R Jain, RC Jain, PC Univ Calif Riverside Coll Engn Visualizat & Intelligent Syst Lab Riverside CA 92521 USA Birla Inst Technol & Sci Elect & Elect Engn Grp Pilani 333031 Rajasthan India Cent Elect Engn Res Inst Pilani 333031 Rajasthan India
A computationally efficient adaptive cosine transform coding technique is described in which only 10 x 10 DCT coefficients are required to be computed for a 16 x 16 pixel block. The coding process involves fuzzy based... 详细信息
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