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Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on

7-11 June 1998

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Displaying Results 1 - 25 of 118
  • ICC '98 - 1998 IEEE International Conference on Communications front matter]

    Publication Year: 1998, Page(s):i - vi
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  • Table of contents

    Publication Year: 1998, Page(s):vii - xxxvii
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  • Some TDMA and OFDM/CDMA receiver structures for communication over the return path of the CATV network

    Publication Year: 1998, Page(s):1309 - 1313 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB)

    This paper deals with the derivation and comparison of some promising TDMA and OFDM/CDMA receiver structures for communication over the return path channel of the cable TV (CATV) network. Regarding TDMA, it is shown that the performance substantially improves by using equalization. Given the slowly varying, frequency selective nature of the ingress noise, OFDM seems an interesting possible access ... View full abstract»

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  • A fuzzy adaptive multiuser detector in CDMA communication systems

    Publication Year: 1998, Page(s):1784 - 1788 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (367 KB)

    A fuzzy adaptive multiuser detector in code-division multiple access (CDMA) communication systems is proposed. This study is motivated by the work with fuzzy adaptive equalization technique based on fuzzy IF-THEN rules. The proposed detector can be adapted via a linear adaptation algorithm under the minimum mean squared error (MMSE) criterion even when the system environment is either unknown or c... View full abstract»

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  • Author index

    Publication Year: 1998, Page(s):0_2 - 0_7
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  • Design and analysis of a fair scheduling algorithm for QoS guarantees in high-speed packet-switched networks

    Publication Year: 1998, Page(s):1520 - 1525 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    B-ISDNs are required to support a variety of services such as audio, data, and video, so that the guarantee of quality-of-service (QoS) has become an increasingly important problem. An effective fair scheduling algorithm permits high-speed switches to divide link bandwidth fairly among competing connections. Together with the connection admission control, it can guarantee the QoS of connections. W... View full abstract»

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  • Enhanced IN call model and protocol for multipoint-multiconnection calls in B-ISDN

    Publication Year: 1998, Page(s):1515 - 1519 vol.3
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    This paper deals with the call model and the intelligent network application protocol (INAP) for an intelligent network (IN) in the broadband-ISDN (B-ISDN). First, we discuss the requirements of a call model and the INAP for B-ISDN. We focus on the relationship with IN Capability Set 2 (CS-2), B-ISDN signalling capability, and service requirements. We then propose a call model that can handle a mu... View full abstract»

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  • Finding good combinations of initial phases for periodic sources in discrete-time queues

    Publication Year: 1998, Page(s):1510 - 1514 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    Our study aims to construct the framework to accommodate periodic and bursty sources into ATM networks effectively. For this purpose, we develop two effective algorithms which can find a good combination of the initial phases of periodic sources in a short time. We then consider a call admission control (CAC) scheme which controls phase combinations of the periodic sources and decides whether a ne... View full abstract»

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  • An admission control scheme for the real-time VBR traffic in the ATM network: deterministic bandwidth allocation

    Publication Year: 1998, Page(s):1505 - 1509 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    We present an admission control scheme for real-time VBR traffic. The deterministic guarantee on the end-to-end delay bound is adopted as the measure of quality-of-service (QoS). The network environment of our admission control algorithm is the connection-oriented network, in which every network node uses the rate-controlled service (RCS) discipline based on the earliest deadline first (EDF) sched... View full abstract»

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  • Design of 622 Mbps ATM OAM functions for the integrated service access network

    Publication Year: 1998, Page(s):1405 - 1409 vol.3
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    As the various types of application services are increased in the ATM (asynchronous transfer mode) network, it becomes a very important requirement for the ATM network equipment to provide for a higher transfer rate and to detect network failure or service degradation. In order to meet these requirements we develop a monolithic single chip device which can handle VPI/VCI address translation, cell ... View full abstract»

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  • An optimization approach to ABR control

    Publication Year: 1998, Page(s):1500 - 1504 vol.3
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    Available bit rate (ABR) sources react to network feedback by adjusting their transmission rates. Most schemes fall into one of two types depending on what is fed back and where the control decision is made. Explicit congestion notification schemes allow sources to make control decisions but only with incomplete information on congestion. Explicit rate schemes use more accurate congestion informat... View full abstract»

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  • The impact of signal strength measures on the efficiency of dynamic channel allocation techniques

    Publication Year: 1998, Page(s):1400 - 1404 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Different dynamic channel allocation (DCA) strategies based on local signal strength measures are evaluated in terms of the degree of frequency reuse they can afford. Fixed and dynamic channel allocation schemes are compared by using a simulation model, which overcomes the limitations of models traditionally used in literature. Valuable results show the superiority of DCA schemes in various scenar... View full abstract»

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  • Multiple symbol differential detection of MDPSK in narrowband interference and AWGN

    Publication Year: 1998, Page(s):1681 - 1684 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    In this paper, we propose a new technique for rejection of narrowband interference based on multiple symbol detection of differential phase shift keying (PSK). Our proposed technique employs a special signalling or vector coding scheme which is shown to be optimum against narrowband interference under certain conditions. As an example of application, we apply our proposed technique to a SFH/DPSK s... View full abstract»

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  • Impulse radio multipath characteristics and diversity reception

    Publication Year: 1998, Page(s):1650 - 1654 vol.3
    Cited by:  Papers (34)
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    Delay-and-sum beamforming is applied to both ideal and measured ultra-wideband (UWB) signals. The results of propagation measurements are also used directly to estimate the performance of an UWB communication system and to characterize design tradeoffs View full abstract»

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  • A generic weight-based network bandwidth sharing policy for ATM ABR service

    Publication Year: 1998, Page(s):1492 - 1499 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    This paper presents a novel generic weight-based network bandwidth sharing policy and an available bit rate (ABR) algorithm that achieves this policy. Our policy supports the minimum cell rate (MCR) requirement and peak cell rate (PCR) constraint of each connection and allocates network bandwidth among all connections based on a weight associated with each connection. To achieve this policy for AB... View full abstract»

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  • A comparative analysis of paging and location update strategies for PCS networks

    Publication Year: 1998, Page(s):1395 - 1399 vol.3
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    Several alternative strategies for reducing paging and location update costs have been proposed in the literature. This paper compares four well-known strategies, that differ in the manner they approach the problem. The same mobility model and evaluation criteria was used for all strategies analyzed. Users are classified according to the call-to-mobility-ratio (CMR). Results are given weighting in... View full abstract»

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  • Multiple symbol noncoherent detection of GMSK

    Publication Year: 1998, Page(s):1676 - 1680 vol.3
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    This paper studies the problem of noncoherent detection of Gaussian minimum shift keying (GMSK). Particular attention is focussed on the popular case of BT=0.25, but the concepts presented apply to other cases as well in addition to the general case of continuous phase frequency shift keying (CPFSK). The optimum noncoherent detector is shown to consist of a bank of matched filters followed by a se... View full abstract»

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  • Fade statistics in microcellular mobile radio channels with shadowing

    Publication Year: 1998, Page(s):1645 - 1649 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    New expressions for the average level crossing rate (LCR) and time fade duration (TFD) of the signal envelope in microcellular mobile radio channels, characterized by Rician fading and lognormal shadowing, the so-called Rice-lognormal (RLN) channel, and by Nakagami fading and lognormal shadowing, so-called Nakagami-lognormal (RLN) channel, are presented. New LCR and TFD curves as functions of the ... View full abstract»

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  • On determining the fair bandwidth share for ABR connections in ATM networks

    Publication Year: 1998, Page(s):1485 - 1491 vol.3
    Cited by:  Papers (17)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The available bit rate (ABR) service is designed to fairly allocate the bandwidth unused by higher priority services. The network indicates to the ABR sources the rates at which they should transmit to minimize their cell loss. Switches must constantly measure the demand and available capacity, and divide the capacity fairly among the contending connections. In order to compute the fair and effici... View full abstract»

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  • Wireless subscriber mobility management using adaptive individual location areas for PCS systems

    Publication Year: 1998, Page(s):1390 - 1394 vol.3
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    We consider a new mobility management scheme-the adaptive location area tracking scheme-in which each mobile performs a location registration as it crosses the boundary of its current personal location area and is assigned a new location area. The size and shape of the new location area depend on the mobile's mobility and call characteristics in its previous location area. The objective is to mini... View full abstract»

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  • Modeling cell departure for shared buffer ATM switch

    Publication Year: 1998, Page(s):1824 - 1828 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The framework of the performance analysis for a buffered asynchronous transfer mode (ATM) switch usually consists of modeling the input traffic arrivals, the switching mechanism, and the cell departure process. The overall accuracy of the performance results relies on how accurately the cell departure process, especially for shared buffer switches is modelled. Unlike output buffer switches where t... View full abstract»

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  • A practical implementation of broadband multiple antenna systems

    Publication Year: 1998, Page(s):1671 - 1675 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    A novel approach is developed to determine the weights of broadband multiple antenna systems so that independent wireless channels (channel diversity) can be established between two localized transceivers in the same bandwidth and the same time (and the same spreading code, if there is any) by taking advantages of the multipath propagation feature View full abstract»

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  • The dynamic packet reservation multiple access scheme for multimedia traffic

    Publication Year: 1998, Page(s):1640 - 1644 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    The performance of dynamic packet reservation multiple access (DPRMA), which was introduced in previous publications, is investigated. In particular, we show here how the DPRMA scheme integrates three different traffic types: voice, video, and data, through a single access control mechanism that permits users to specify their immediate bandwidth requirements. The primary feature of the DPRMA is th... View full abstract»

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  • A new method for developing optical CDMA address code sequences using the genetic algorithm

    Publication Year: 1998, Page(s):1279 - 1283 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A new method for developing optical CDMA address code sequences is presented. The method is based on the genetic algorithm, which has already shown success in developing two-dimensional correlation functions for pattern recognition applications. The algorithm is very flexible in terms of optimization criteria, thus adequate for various optical CDMA applications, including coherent and non-coherent... View full abstract»

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  • Efficient filterbank channelizers for software radio receivers

    Publication Year: 1998, Page(s):1566 - 1570 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    For cellular software radio receivers, this paper presents a computationally efficient algorithm for extracting individual radio channels from the output of the wideband A/D converter. In a software radio, the extraction of individual channels from the output of the wide band A/D converter is by far the most computationally demanding task; hence, it is very important to devise computationally effi... View full abstract»

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