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Journal of Communications and Networks

Issue 3 • Sept. 1999

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Displaying Results 1 - 15 of 15
  • Tandem architecture for photonic packet switches

    Publication Year: 1999, Page(s):145 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (203 KB)

    A new switch architecture is presented to enhance output queuing in photonic packet switches. Its application is for a packet switching environment based on the optical transport of fixed length packets. This architecture consists of a couple of cascading switching elements with output queuing, whose buffer capacity is limited by photonic technology. The introduction of a suitable buffer managemen... View full abstract»

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  • State encoding of Hidden Markov linear prediction models

    Publication Year: 1999, Page(s):153 - 157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (233 KB)

    In this paper, we derive finite-dimensional non-linear filters for optimally reconstructing speech signals in Switched Prediction vocoders, Code Excited Linear Prediction (CELP) and Differential Pulse Code Modulation (DPCM). Our filter is an extension of the Hidden Markov filter. View full abstract»

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  • Analysis and modeling of dual-band GSM networks

    Publication Year: 1999, Page(s):158 - 165
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (486 KB)

    This paper studies interconnection of DCS1800 and GSM900 dual-band networks. Two types of interconnection configurations for GSM services, non-overlap and overlap, are described. We propose analytic and simulation models to investigate the benefit of the overlap configuration. Our results explain how the radio channel capacities, the inter-system handoff failure rate, the originating call traffic ... View full abstract»

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  • Analysis of antenna impact on wide-band indoor radio channel and measurement results at 1 GHz, 5.5 GHz, 10 GHz and 18 GHz

    Publication Year: 1999, Page(s):166 - 181
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB)

    The object of this paper is to investigate the influence of antenna pattern on indoor radio channel characteristics. Different from previous works where this analysis was carried out at a fixed frequency using different antennas, in the present paper (where measurements were taken in a wide frequency range) the variation of the radiation pattern was caused by two factors: the change of the radiati... View full abstract»

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  • Asymptotic performance of ML sequence estimator using an array of antennas for coded synchronous multiuser DS-CDMA systems

    Publication Year: 1999, Page(s):182 - 188
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB)

    The optimal joint maximum-likelihood sequence estimator using an array of antennas is derived for synchronous direct sequence-code division multiple access (DS-CDMA) systems. Each user employs a rate 1/n convolutional code for channel coding for the additive white Gaussian noise (AWGN) channel. The array receiver structure is composed of beamformers in the users' directions followed by a bank of m... View full abstract»

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  • A new method for integrated end-to-end delay analysis in ATM networks

    Publication Year: 1999, Page(s):189 - 200
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB)

    For admitting a hard real-time connection to an ATM network, it is required that the end-to-end delays of cells belonging to the connection meet their deadlines without violating the guarantees already provided to the currently active connections. There are two kinds of methods to analyze the end-to-end delay in an ATM network. A decomposed method analyzes the worst case delay for each switch and ... View full abstract»

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  • Rapid implementation of the MAC and interface circuits for the wireless LAN cards using FPGA

    Publication Year: 1999, Page(s):201 - 212
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (251 KB)

    This paper studies the rapid design and implementation of the medium access control (MAC) and related interface circuits for 802.11 wireless LANs based on the field programmed gate array (FPGA) technology. Our design is thus aimed to support both the distributed coordination function (DCF) and the point coordination function (PCF) with the aid of FPGA technology. Furthermore, in an infrastructure ... View full abstract»

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  • [Advertisement]

    Publication Year: 1999, Page(s): 1
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  • Call for papers

    Publication Year: 1999, Page(s): 1
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  • Call for papers

    Publication Year: 1999, Page(s): 1
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  • Call for papers

    Publication Year: 1999, Page(s): 1
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  • [Front cover]

    Publication Year: 1999, Page(s): c1
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  • [Back cover]

    Publication Year: 1999, Page(s): c4
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  • Journal of Communications and Networks (JCN) - back inside cover

    Publication Year: 1999, Page(s): c2
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  • Journal of Communications and Networks (JCN) - back inside cover

    Publication Year: 1999, Page(s): c3
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Aims & Scope

The Journal of Communications and Networks is published six times per year, and is committed to publishing high-quality papers that advance the state-of-the-art and practical applications of communications and information networks.

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Meet Our Editors

Editor-in-Chief
Anthony Ephremides
University of Maryland