IEE Proceedings - Communications

Issue 2 • Apr 2000

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Displaying Results 1 - 9 of 9
  • Nonlinear RLS algorithm for amplitude estimation in class A noise

    Publication Year: 2000, Page(s):81 - 86
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    An adaptive nonlinear recursive least square (RLS) algorithm for amplitude estimation in class A noise is presented. For Gaussian input signal and class A noise, its mean and mean-square behaviours are studied. It is shown that the linear RLS and nonlinear RLS algorithm with the clipper function are stable in the mean and mean square. For non-Gaussian input, amplitude estimation in CDMA communicat... View full abstract»

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  • Frequency estimation for complex field image channel coding

    Publication Year: 2000, Page(s):75 - 80
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    BCH (Bose-Chaudhuri-Hocquenghem) codes over complex fields in the frequency domain have been proposed for image coding applications as robust channel coding methods. The embedded problem of estimation of complex sinusoids corrupted by white additive noise may be solved in different ways. A standard approach for modelling such signals employs low-order nearly nonstationary autoregressive (AR) model... View full abstract»

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  • Practical aspects of iterative decoding

    Publication Year: 2000, Page(s):69 - 74
    Cited by:  Papers (3)  |  Patents (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB)

    The convergence problem of iterative, block-mode turbo decoders is discussed and the performance of a practical convergence criterion is presented. A fixed-point approach is used, whereby the saturation and stability characteristics of the extrinsic-probability vector for each MAP decoder are determined by simulation and used to terminate iteration. If these vectors are saturated and identical, or... View full abstract»

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  • Multiuser detection for CDMA antenna array receivers using spatial equivalence classes

    Publication Year: 2000, Page(s):105 - 113
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    The reverse link (mobile to base) of a cellular direct-sequence code-division multiple-access system is considered with the aim of increasing system capacity while avoiding system complexity. The capacity of a conventional (matched filter) receiver can be increased by employing sectorised antenna arrays or multiuser detection techniques. Results confirm that the potentially complex approach of bea... View full abstract»

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  • Efficient parallel multicast ATM switch

    Publication Year: 2000, Page(s):123 - 132
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    A novel multicast switch architecture with high throughput performance and low hardware complexity is proposed. The storage complexity of the translation tables required by the copy network is improved from O(N2) to O(N). The throughput performance of the proposed switch architecture is very close to 100% when more than five multicast switching modules (MSMs) are used. The proposed mult... View full abstract»

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  • Iterative decoding for coded noncoherent MPSK communications over phase-noisy AWGN channel

    Publication Year: 2000, Page(s):87 - 95
    Cited by:  Papers (72)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    A family of interleaved systems for communicating over the additive white Gaussian noise (AWGN) channel with noisy or unknown phase is investigated. Each system comprises convolutional code or turbo code, interleaver, binary phase shift keying or quaternary phase shift keying modulation and differential or similar encoding. The receiver performs jointly and iteratively the decoding and the channel... View full abstract»

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  • Limitations of artificial neural networks for traffic prediction in broadband networks

    Publication Year: 2000, Page(s):114 - 118
    Cited by:  Papers (17)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    B-ISDN is expected to support a variety of services, each with its own traffic characteristics and quality-of-service requirements. Such diversity, however, has created new congestion control problems, some of which could be alleviated by a traffic prediction scheme. The paper investigates the applicability of artificial neural networks for traffic prediction in broadband networks. Recent work has... View full abstract»

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  • Design and dimensioning of dual-homing hierarchical multi-ring networks

    Publication Year: 2000, Page(s):96 - 104
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    A network design study employing multiple interconnected rings which exploit the merits of ring topologies is presented. Near-optimal dual-homing structures are obtained using a novel partition, construct and perturb (PCP) network design method that considers both total ring length and intra-ring traffic. In order to address survivability issues, two bi-connected hierarchical topology schemes are ... View full abstract»

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  • Window-based cell scheduling algorithm for VLSI implementation of an input-queued ATM switch

    Publication Year: 2000, Page(s):119 - 122
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (180 KB)

    A method for providing bandwidth reservations in an input-buffered self-routing crossbar switch architecture is introduced and analysed. The scheme computes a conflict-free set of flows within a cell slot and achieves a link utilisation as high as 93%, for uniform random bursty traffic. Simulations of the proposed algorithm have been performed for different window sizes (W=1, 2, 4, 8) and the cell... View full abstract»

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