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IEE Proceedings - Communications

Issue 1 • Date Feb 1994

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Displaying Results 1 - 6 of 6
  • B-tree: a high-performance fault-tolerant ATM switch

    Publication Year: 1994, Page(s):20 - 28
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (656 KB)

    A high-performance fault-tolerant ATM switch (B-tree) is proposed. This switch embeds multiple baseline networks tightly to improve the fault tolerance and throughput of conventional multistage interconnection networks. This proposed switch retains the advantages of multistage interconnection networks but is much more robust in the sense that multiple paths are available between each input-output ... View full abstract»

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  • Performance of joint trellis-coded quantisation/modulation with a Bayes receiver

    Publication Year: 1994, Page(s):13 - 19
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (492 KB)

    The performance, based on the mean squared error criterion, of joint trellis-coded-quantisation (TCQ) and trellis-coded-modulation (TCM) systems operating in the additive-white-Gaussian-noise (AWGN) channel and the Rayleigh flat-fading channel is studied. Instead of a conventional Viterbi receiver, the authors propose an optimal nonlinear receiver based on Bayesian estimation theory. Since the Bay... View full abstract»

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  • Multilevel ternary line codes with trellis structure

    Publication Year: 1994, Page(s):7 - 12
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (356 KB)

    A combination of the two coding techniques given by Imai and Hirakawa (1977) and Pottie and Taylor (1989) is applied to the ternary (+, 0, -) line-code design problem. New ternary coding systems are obtained with reduced decoding complexity and improved error performance, compared with those obtained by the classical Ungerboeck's trellis-coding approach. The decoding complexity for high coding rat... View full abstract»

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  • New shortened subcodes of binary extended QR codes

    Publication Year: 1994, Page(s):2 - 6
    Cited by:  Patents (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (280 KB)

    A new class of linear codes is constructed by a shortening of the binary extended quadratic residue (EQR) codes. It is shown that the error-control rate of each such code is better than the rate of the corresponding binary EQR codes. An algorithm for finding the generator matrices of this code is given, as well as a decoding scheme View full abstract»

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  • Analysis of out-of-sequence problem and preventative schemes in parallel switch architecture for high-speed ATM network

    Publication Year: 1994, Page(s):29 - 38
    Cited by:  Papers (3)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (652 KB)

    The parallel switch architecture combines advantageously a parallel plane method with a bit-parallel conversion scheme in VLSI implementation of ATM switches with the capability of handling unlimited external trunk speed. However, the parallel architecture encounters out-of-sequence problems owing to various possible switching paths. The authors analyse the out-of-sequence performance dependency o... View full abstract»

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  • Adaptive two-stage maximum likelihood estimation for cellular radio

    Publication Year: 1994, Page(s):39 - 48
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (724 KB)

    The problem of optimal detection over nonselective fading channels for cellular radio is treated from the viewpoint of adaptive two-stage maximum likelihood estimation (MLE). Data for transmission are divided into blocks, each preceded by one or more reference symbols. For selective fading, the receiver consists of an adaptive filter (AF) and a two-stage maximum likelihood estimator (TSMLE). For n... View full abstract»

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