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Communications, 1992. ICC '92, Conference record, SUPERCOMM/ICC '92, Discovering a New World of Communications., IEEE International Conference on

Date 14-18 June 1992

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Displaying Results 1 - 25 of 363
  • Limited-1 cyclic service system as an imbedded Markov chain at server arrival instants

    Publication Year: 1992, Page(s):400 - 404 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The authors model the limited-1 cyclic service system as an embedded Markov chain at server arrival instants. Using the related state equations, for a system with (N+1)-queues, a set of (N+1) simultaneous equations in (N+1) unknowns is derived whose solution gives the probability of queue i for i=0,1, . . .,N being empty when the server arrives there. An expression of the expected number of custom... View full abstract»

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  • A class of protocols for heavy loaded multiple-channel local area networks

    Publication Year: 1992, Page(s):23 - 27 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Multichannel local area networks (MLANs) that use several parallel broadcast channels and carrier sense multiple-access (CSMA)-type protocols have been shown to provide better performance than single-channel LANs of the same total bandwidth. The authors introduce new protocols that apply an asymmetric load assignment policy and show that at medium to high levels they allow higher throughput than t... View full abstract»

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  • SUPERCOMM/ICC '92. Discovering a New World of Communications (Cat. No.92CH3132-8)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (33 KB)
    Freely Available from IEEE
  • The fundamental theorem of information theory from the sampling theorem point of view

    Publication Year: 1992, Page(s):344 - 347 vol.1
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The authors investigate the relationship between the nonuniform sampling theorem and the fundamental theorem of information theory. This analysis leads to an alternative method of error correction. They propose not to correct for the lost samples but rather to reconstruct the original signal from the rest of the samples using nonuniform sampling reconstruction techniques. This idea can be generali... View full abstract»

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  • Wireless in-building network architecture and protocols

    Publication Year: 1992, Page(s):1025 - 1031 vol.2
    Cited by:  Papers (5)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    The authors highlight the topology, architecture, and protocols developed for a wireless in-building network based on 18-GHz radio technology. They introduce the requirements of an in-building office environment that involves desktop computing applications and describe a microcellular topology with store-and-forward radio modules that uses time division duplex techniques to organize transmitting a... View full abstract»

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  • Performance analysis off multipath banyan networks

    Publication Year: 1992, Page(s):912 - 916 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The performances of the replicated and the dilated banyan networks, which are being considered for use in broadband packet switch architectures, are analyzed. A strong argument is made for comparing the performances of the various multipath networks using the assumption that multiple packets can be accepted at any destination. Multipath banyan networks with one internal buffer in each switching el... View full abstract»

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  • Parallel `ATOM' switch architecture for high-speed ATM networks

    Publication Year: 1992, Page(s):250 - 254 vol.1
    Cited by:  Papers (9)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The authors propose a parallel ATOM (asynchronous transfer mode output modular) switch architecture, capable of handling multi-gigabit per second lines. It is composed of distributors, a number of switch planes, and resequencers. A simple resequencing method is also proposed to keep sequence integrity for cells sent out from different switch planes. It is shown that the memory access speed require... View full abstract»

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  • Noise-predictive partial-response equalizers and applications

    Publication Year: 1992, Page(s):942 - 947 vol.2
    Cited by:  Papers (27)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The authors consider enhancing the performance of the traditional linear partial-response (PR) equalizer by using noise prediction techniques. The resulting noise-predictive PR equalizer consists of a forward linear PR equalizer followed by a linear predictor to whiten the noise and the residual distortion at the equalizer output. Assuming correct decisions and applying results from prediction the... View full abstract»

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  • Structural representation of management and control information in broadband networks

    Publication Year: 1992, Page(s):1019 - 1024 vol.2
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The authors investigate the structural representation of real-time network control and management of asynchronous transfer modes (ATM)-based networks. The network architecture consists of four planes that model the information transport, connection management and control, resource monitoring and management, and resource management and control functions. A fifth plane represents the architecture fo... View full abstract»

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  • A customer/supplier partnership: groundwork for improved report card grades

    Publication Year: 1992, Page(s):1144 - 1147 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    Pacific Bell began using vendor report cards as a means to provide performance feedback in 1990. One of the elements of the report card specifically measures the vendor's responsiveness to escalated problems. This item is called trouble resolution. AT&T's first grade in this area for one of its products, the 5ESS Switch, from Pacific Bell reflected poor performance, which prompted a joint effo... View full abstract»

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  • A hybrid shared-memory/space-division architecture for large fast packet switches

    Publication Year: 1992, Page(s):905 - 911 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    The authors explore the use of components of different architectural types to build a large fast packet switch. They introduce a hybrid architecture, referred to as the memory/space-division/memory (MSM) switching fabric, which integrates shared-memory and space-division switching techniques and makes it possible to build an efficient self-routing switch capable of serving several hundred users. T... View full abstract»

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  • Applications of suppression filters for CDMA overlay situations

    Publication Year: 1992, Page(s):245 - 249 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    A direct sequence code division multiple access (DS-CDMA) system operating over a Rayleigh fading channel and sharing a common spectrum with various narrowband waveforms is discussed. Because of the presence of these narrowband waveforms, a suppression filter at a receiver is employed to reduce the interference. The average bit error rate (BER) performance is evaluated, and how the performance is ... View full abstract»

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  • Shaping of multi-dimensional signal constellations using a lookup table

    Publication Year: 1992, Page(s):927 - 931 vol.2
    Cited by:  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Shaping relates to the selection of the boundary of a signal constellation to reduce its average energy. Addressing is the assignment of the data bits to the constellation points. A major concern about the shaping regions is their addressing complexity. The authors use a lookup table for addressing. The method is based on partitioning the two-dimensional subconstellations into shaping shells of eq... View full abstract»

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  • A light-weight LLC protocol in high-speed satellite data networks

    Publication Year: 1992, Page(s):348 - 354 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The authors study a light-weight logical link control (LLC) protocol referred to as the fast select connection-oriented (FS-CO) protocol in high-speed satellite data communications. The FS-CO-LLC protocol employs a method of implicit connection establishment to decrease the communication overhead. The authors analyze the performance of the FS-CO-LLC protocol in a satellite packet network with the ... View full abstract»

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  • Digital microwave network 213.2

    Publication Year: 1992, Page(s):1853 - 1857 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    In 1989, the Southern California Gas Company completed the installation of a 62-hop fully digital microwave backbone T1 network with one connecting fiber optic link. The ways in which the company determined that a private network was needed, designed and installed the network, selected vendors, and managed the overall effort are described. Some of the lessons learned from this project are discusse... View full abstract»

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  • Proposal of intelligent telecommunication network model in ATM networks-distributed cooperative multi agent model

    Publication Year: 1992, Page(s):1014 - 1018 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The authors propose the distributed cooperative multiagent model to create truly intelligent telecommunication networks. In the proposed model, the higher functional layer consists of a distributed cooperative computing environment. The distributed cooperative virtual path (VP) provisioning method is introduced for multiple VP allocation control asynchronous transfer mode (ATM) networks. The distr... View full abstract»

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  • Total customer satisfaction [telecommunication products]

    Publication Year: 1992, Page(s):1139 - 1143 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    The author focuses on Tellabs' approach to quality and meeting/exceeding the customers' total requirements. Tellabs has established and implemented a quality philosophy that emphasizes continuous process improvement, strategic quality management, and senior management commitment. Through this quality philosophy and associated programs total customer satisfaction can be achieved View full abstract»

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  • Spectral correlation of BPSK and QPSK signals in a nonlinear channel with AM/AM and AM/PM conversions

    Publication Year: 1992, Page(s):627 - 632 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The authors analyze the effect of AM/AM and AM/PM conversions on spectral correlation of binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) signals. These conversions degrade the performance of many new spectral correlation based techniques for interference rejection, signal detection, and parameter estimation. These techniques require knowledge of the spectral correlation f... View full abstract»

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  • RAP: a high speed protocol for random access devices

    Publication Year: 1992, Page(s):969 - 975 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The protocol proposed, the random access protocol (RAP), is designed to offer a high throughput for bulk data transfers between random access devices like disks. The protocol is meant to be used in the data transfer phase of any bulk transfer protocol, and is designed to avoid the drawbacks of the sliding window protocol. The protocol exploits the property of random access to offer a higher throug... View full abstract»

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  • Effectiveness of leaky bucket policing mechanism

    Publication Year: 1992, Page(s):1201 - 1205 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The authors consider the effectiveness of policing functions in controlling congestion in an asynchronous transfer mode (ATM) network. A method for measuring the effectiveness of a policing scheme is proposed, and analytical and simulation results are presented to show the effectiveness and limitations of a multiple leaky bucket policing scheme. The results indicate that statistical multiplexing w... View full abstract»

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  • DQDB: a fast converging bandwidth balancing mechanism that requires no bandwidth loss

    Publication Year: 1992, Page(s):142 - 146 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A bandwidth balancing (BWB) mechanism has been included in the IEEE 802.6 standard for metropolitan area networks (MANs). A new BWB mechanism for the distributed queue dual bus (DQDB) is proposed that does not waste any idle slots. For this reason it can converge faster to the steady state than the current BWB mechanism of the DQDB. The authors analyze the throughput and delay performance of the p... View full abstract»

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  • A heavy-traffic comparison of shared and segregated buffer schemes for queues with the head-of-line processing-sharing discipline

    Publication Year: 1992, Page(s):232 - 236 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    In the head-of-line processor sharing discipline, the server completes the work from a given channel at a rate depending only on the number of other channels with work in the system. The authors compare the buffer requirements of shared and nonshared buffer schemes, when both schemes provide head-of-the-line processor sharing service among channels. Modeling the two schemes as Brownian flow system... View full abstract»

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  • Performability analysis of large-scale packet switching networks

    Publication Year: 1992, Page(s):416 - 419 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    An efficient computable measure of performability, the combination of performance and reliability, in packet switching networks is presented. The impact of the network's reliability on response time is examined. Packet delivery, the probability Pr(τ⩽t ) that the delay τ for a packet transmission does not exceed a specified time t, is used as a measure of resp... View full abstract»

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  • Nonlinear channel equalization using clustering techniques

    Publication Year: 1992, Page(s):1277 - 1279 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    A new maximum likelihood equalizer is proposed. The equalization task is treated as a nearest neighbor classifier, using appropriately defined measure distances. The clustering procedure is reviewed. The states of the Viterbi algorithm consist of the centers around which the observation points are clustered. Subclustering techniques to reduce complexity are considered and their effect on the perfo... View full abstract»

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  • Pilot symbol aided QPRS for digital land mobile applications

    Publication Year: 1992, Page(s):760 - 764 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The performance of a narrowband partial response signaling system in a frequency selective fading channel is studied for different receiver structures. Bit errors caused by Rayleigh fading are mitigated by periodically inserting pilot symbols that are used to provide amplitude and phase references at the receiver. It is shown that the delay spread tolerance of a quadrature partial response signali... View full abstract»

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