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Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.

Date Oct. 30 2005-Nov. 2 2005

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  • Conference Record Thirty-Ninth Asilomar Conference on Signals, Systems & Computers [2005]

    Publication Year: 2005, Page(s): i
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  • Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems & Computers [2005]

    Publication Year: 2005, Page(s): ii
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  • Conference Record of The Thirty-Ninth Asilomar Conference on Signals, Systems & Computers [October 30 - November 2, 2005]

    Publication Year: 2005, Page(s): iii
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  • Copyright

    Publication Year: 2005, Page(s): iv
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  • Table of contents

    Publication Year: 2005, Page(s):v - xxi
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  • Student Paper Contest Finalists/Winners

    Publication Year: 2005, Page(s): xxii
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  • Foreword

    Publication Year: 2005, Page(s): xxiii
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  • [Breaker page]

    Publication Year: 2005, Page(s): xxiv
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  • Session MA1b Source and Channel Coding

    Publication Year: 2005, Page(s):1 - 2
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  • On the Sum-rate of the Vector Gaussian CEO Problem

    Publication Year: 2005, Page(s):3 - 7
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB) | HTML iconHTML

    We study the vector version of the Gaussian CEO problem. We present a lower bound on the sum-rate of any class of distributed quantizers that meet the quadratic distortion constraint, and show that it is tight in various situations including the symmetric one View full abstract»

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  • Variable-Rate Universal Slepian-Wolf Coding with Feedback

    Publication Year: 2005, Page(s):8 - 12
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    Traditional Slepian-Wolf coding assumes known statistics and relies on asymptotically long sequences. However, in practice the statistics are unknown, and the input sequences are of finite length. In this finite regime, we must allow a non-zero probability of codeword error isin and also pay a penalty by adding redundant bits in the encoding process. In this paper, we develop a universal scheme fo... View full abstract»

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  • Design of n-Channel Multiple Description Vector Quantizers

    Publication Year: 2005, Page(s):13 - 17
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (714 KB) | HTML iconHTML

    A new design approach for multiple description vector quantizers over more than two channels is presented. The design is inspired by the concept of channel optimized vector quantization. While most previous works have split the decoder into several independent entities, identifying the appropriate channel model makes it straightforward to implement the multiple description design problem using onl... View full abstract»

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  • Source and Channel Coding for Quasi-Static Fading Channels

    Publication Year: 2005, Page(s):18 - 22
    Cited by:  Papers (25)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (551 KB)

    We consider transmission of a continuous amplitude source over a quasi-static Rayleigh fading channel. We analyze three different source and channel coding strategies in terms of overall expected distortion (ED). Our goal is to maximize the distortion exponent (Delta), which is the exponential decay rate of ED with increasing SNR. In each case, by adjusting the system parameters we find the best D... View full abstract»

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  • Session MA2b Systems and Networks

    Publication Year: 2005, Page(s):23 - 24
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  • Extensions of the Signal Richness Preservation Problem in LTI Systems

    Publication Year: 2005, Page(s):25 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB) | HTML iconHTML

    The idea of signal richness has recently been studied in considerable details, and the conditions on linear time invariant (LTI) systems to preserve such richness have been established. In this paper, the concept of richness is extended to practically useful classes such as bounded signals. The class of LTI systems studied for the richness preservation problem are generalized to cases including re... View full abstract»

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  • Distributed Optimization and Duality in QoS Control for Wireless Best-Effort Traffic

    Publication Year: 2005, Page(s):30 - 35
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (826 KB) | HTML iconHTML

    This work addresses the problem of node-by-node QoS control in wireless ad-hoc networks carrying best-effort (elastic) traffic. We characterize a duality behavior of the original and so-called adjoint network in the sense of optimization theory. Relying on the adjoint network concept we propose a decentralized algorithm yielding the optimal power allocation and analyze it in the framework of stoch... View full abstract»

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  • A Hybrid ARQ Scheme for Resilient Packet Header Compression

    Publication Year: 2005, Page(s):36 - 40
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB) | HTML iconHTML

    In this work we address resilient packet header compression in a setup similar to RFC 3095 (robust header compression - ROHC), where a noisy feedback channel is available. We propose a new predictive hybrid ARQ (HARQ), using a systematic convolutional code with delay-limited interleaving. The compressed packet headers are bit interleaved, encoded, and the parity bits are loaded onto the packets in... View full abstract»

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  • Throughput Analysis of Selective Repeat ARQ in Fading Wireless Channels

    Publication Year: 2005, Page(s):41 - 45
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    This work analyzes the throughput of selective repeat (SR) protocol in fading wireless channels. Hidden Markov models (HMM) provide a good approximation to the fading wireless channel, hut the calculation of SR throughput has been unavailable for channels characterized by HMM. We use a generalization of Mason's flow graphs with matrix weights for our analysis, leading to the moment generating func... View full abstract»

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  • [Breaker page]

    Publication Year: 2005, Page(s):46 - 48
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  • Shape-preserving mesh decimation within a graph-theoretic framework

    Publication Year: 2005, Page(s):49 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (609 KB) | HTML iconHTML

    A new mesh decimation algorithm is proposed to address the problem of obtaining shape-preserving coarse approximations of a highly detailed 3D surface mesh. The input mesh is segmented into multiple, disjoint sub-meshes to facilitate decimation. Given a sub-mesh, various shape clusters are identified and the vertices in those clusters arc labeled as boundary or interior. Shape is preserved by cons... View full abstract»

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  • A Non-Expansive Convolution for Nonlinear-Phase Paraunitary Filter Banks and Its Application to Image Coding

    Publication Year: 2005, Page(s):54 - 58
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (709 KB) | HTML iconHTML

    This paper proposes a new non-expansive convolution for nonlinear-phase paraunitary filter banks (NLPPUFBs). First, we present that any NLPPUFBs can be implemented by connecting several block transforms. Next, we show a signal extension method at the analysis bank by exploiting the characteristics of that structure. Furthermore, we prove that the signal can be reconstructed at the synthesis bank w... View full abstract»

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  • A New Adaptive Zoom Algorithm for Tracking Targets Using Pan-Tilt-Zoom Cameras

    Publication Year: 2005, Page(s):59 - 63
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (233 KB) | HTML iconHTML

    We present a new method to adaptively configure the focal-length of a pan-tilt-zoom camera to track a point target with improved accuracy. The target tracker is implemented by using a Rao-Blackwellized particle filter. The focal-length of the camera is configured to include a time varying percentage of the projected particles on the camera image plane. The performance of the adaptive zoom algorith... View full abstract»

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  • A Morphing Approach for Synthesizing Multichannel Recordings

    Publication Year: 2005, Page(s):64 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (293 KB) | HTML iconHTML

    In this paper we propose a morphing approach that can synthesize microphone signals with the acoustical characteristics of specific instrument. The proposed method is composed of three stages. In the first step, the short-time Fourier transform is used to represent signals as a 3-D structure. The cosine similarity measure is then applied to this pre-processed time-frequency information for locatin... View full abstract»

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  • Session MA4b Wireless Testbeds and Architectures

    Publication Year: 2005, Page(s):69 - 70
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  • A Pipelined Architecture for V-BLAST OFDM Detection

    Publication Year: 2005, Page(s):71 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB) | HTML iconHTML

    V-BLAST can be combined with OFDM to achieve high data rate transmission in frequency selective fading channels. Due to the high data rates nature in V-BLAST OFDM systems, a dedicated silicon solution for V-BLAST detection will be cost effective. In this paper a pipelined architecture for V-BLAST OFDM detector is presented. It is designed for a 3times3 MIMO wireless LAN system with 48 data subcarr... View full abstract»

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