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2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No.01CH37233)

26-28 Aug. 2001

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  • 2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No.01CH37233)

    Publication Year: 2001
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    Freely Available from IEEE
  • Author index

    Publication Year: 2001, Page(s):753 - 755
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    Freely Available from IEEE
  • A new real-time scheduling algorithm for continuous media tasks

    Publication Year: 2001, Page(s):417 - 420 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    Real time scheduling is one of important research areas, since there is great interest in multimedia services using Internet. This paper proposes a modified proportional share scheduling algorithm considering the characteristics of continuous media such as their continuity and time dependency. The proposed scheduling algorithm shows graceful degradation of performance in overloaded condition and d... View full abstract»

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  • On choice of impulse response length in channel identification

    Publication Year: 2001, Page(s):370 - 373 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB) | HTML iconHTML

    A new approach to the problem of estimating length of a channel impulse response is presented. Unlike the information theoretic approaches, the new method examines the unmodeling effect explicitly and independent of the additive noise effect View full abstract»

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  • Parallel solution for railway power network simulation

    Publication Year: 2001, Page(s):413 - 416 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    The Streaming SIMD extension (SSE) is a special feature that is available in the Intel Pentium III and P4 classes of microprocessors. As its name implies, SSE enables the execution of SIMD (Single Instruction Multiple Data) operations upon 32-bit floating-point data therefore, performance of floating-point algorithms can be improved. In electrified railway system simulation, the computation involv... View full abstract»

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  • Dynamic objects to support evolution of mobile agents

    Publication Year: 2001, Page(s):748 - 751 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    The self-modifiability or evolvability is necessary for mobile agents to navigate over network changing unpredictably and continuously. We propose an approach to the evolution of mobile agents based on dynamic objects capable of being attached to, interpreted by carried with, exchanged among, and structured by the agents. We have implemented such objects on the MESSENGERS mobile-agents system, and... View full abstract»

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  • A sum of sinusoids with random phase angle and a prescribed power spectral density to approximate fractional Gaussian noise

    Publication Year: 2001, Page(s):365 - 369 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    This paper shows that V. Paxson's "quack like a duck" approach to generating fractional Gaussian noise (see Computer Communication Review, vol.27, no.5, p.5-18, 1997) is essentially a Monte Carlo procedure using a sum of sinusoids with random phase angle and a prescribed power spectral density. It is well known that a sum of sinusoids with random phase angle is a good approximation to generate a G... View full abstract»

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  • Managing design patterns in MAKE style

    Publication Year: 2001, Page(s):409 - 412 vol.2
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    In this investigation we propose how to manage evolution of design patterns that consist of parameterized design documents and templated software (or sample codes). Whenever design patterns are evolved, dependency among them are examined and designers are notified that there might be some inconsistency among the patterns. We discuss such features based on dependency-detection mechanism that are fo... View full abstract»

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  • Price-comparison agents for MAGICS

    Publication Year: 2001, Page(s):744 - 747 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    Price comparison is an important step in a consumer buying process. In this paper, we present a mobile agent-based Internet Commerce System (MAGICS) and discuss how it can be used to facilitate price comparison. We formulate a mathematical model to determine the optimum number of mobile agents to be dispatched if the price distribution is known. The mathematical model is solved with both the unifo... View full abstract»

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  • Dual-tone MFSK for frequency-hopped spread-spectrum multiple access

    Publication Year: 2001, Page(s):643 - 646 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    This paper investigates a dual-tone MFSK signalling technique for a frequency-hopped spread-spectrum communication system. It allows for multiple access communications with less transmission bandwidth and thus greater number of users than conventional MFSK. Both uncoded and coded dual-tone MFSK systems are considered in multiple access interference and additive white Gaussian noise with and withou... View full abstract»

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  • Moment-based estimation of the Nakagami-m fading parameter

    Publication Year: 2001, Page(s):361 - 364 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    Moment-based estimation of the Nakagami-m (1960) fading parameter is considered for both noiseless and noisy environments. For a noiseless environment, a family of new estimators, which uses lower order fractional sample moments, is shown to achieve better performance than the best known moment-based estimator and to achieve comparable performance to an approximate maximum-likelihood estimator. A ... View full abstract»

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  • Avoiding faulty privileges in fast stabilizing rings

    Publication Year: 2001, Page(s):405 - 408 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    Most conventional studies on self-stabilization have been indifferent to the safety under convergence. This paper investigates how mutual exclusion property can be achieved in self-stabilizing rings even for illegitimate configurations. We present a new method which uses a state with a large state space to detect faults. If some faults are detected, every process is reset and not given a privilege... View full abstract»

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  • Automatic outlier detection in multibeam data using median filtering

    Publication Year: 2001, Page(s):690 - 693 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    The automatic detection of outliers during the post-processing of the data collected by a multibeam echosounder is considered. An algorithm based on median filtering has been used for the detection process. The algorithm is tested and evaluated using synthetic as well as real field multibeam data. The results obtained show that the algorithm detects most of the outliers with minimal data degradati... View full abstract»

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  • Design and implementation of a mobile agent-based auction system

    Publication Year: 2001, Page(s):740 - 743 vol.2
    Cited by:  Papers (6)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    The online auction is an important e-commerce application which enables the buying and selling of goods through a dynamic pricing strategy. This paper presents the design and implementation of a multi-access and multi-functional auction system. Users can access the auction system through the Web, WAP-enabled devices and agents, particularly mobile agents. The auction system supports different type... View full abstract»

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  • Mobile communication in power distribution application

    Publication Year: 2001, Page(s):639 - 642 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    This paper investigates how to interface the wireless application protocol (WAP) architecture to the SCADA system running distributed network protocol (DNP) in a power process plant. DNP is a well-developed protocol to be applied in the supervisory control and data acquisition (SCADA) system but the system control centre and remote terminal units (RTUs) are presently connected through a local area... View full abstract»

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  • QoS routing with mobility prediction in MANET

    Publication Year: 2001, Page(s):357 - 360 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    A Mobile Ad hoc NETwork (MANET) is a collection of wireless mobile hosts that form a temporary network without a centralized administration or wired infrastructure. Because of its dynamic topology, a MANET's routing protocol is different from other networks. Network control with Quality of Service (QoS) support is a key issue for multimedia applications in MANET. This paper proposes QoS Routing wi... View full abstract»

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  • Classification of characteristic words of electronic newspaper based on the directed relation

    Publication Year: 2001, Page(s):591 - 594 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    Newspaper articles are gradually opened to Web system. But the categories of articles are remained in conventional category types. So users of these system have to consider the appropriate searching keywords and categories when they search some articles. In this paper, we propose the new classification method for the characteristic words based on directed relation. We think this classification can... View full abstract»

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  • DSP: a MAC scheme with double-side scheduling for APON

    Publication Year: 2001, Page(s):530 - 533 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    MAC (medium access control) schemes for ATM-based passive optical network (APON) mostly adopt single-side scheduling in which only optical line termination (OLT) schedules the upstream access order for optical network units (ONUs). In this paper, we propose a MAC scheme called double-side scheduling protocol (DSP) in which both OLT and ONUs participate in the scheduling process. The proposed MAC s... View full abstract»

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  • How to measure reliability and quality of IP multicast services?

    Publication Year: 2001, Page(s):401 - 404 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    IP multicast is the most often used technique to transport multimedia data over the Internet. Due to the low resource requirements when transmitting one multimedia stream to more than just one client, it is deployed in most backbone networks as well as in most campus networks. Typical services are video broadcasts or video conferences. IP multicast, like IP, does not support transporting realtime ... View full abstract»

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  • Optimal wavelength allocation and flow assignment in multiwavelength optical networks

    Publication Year: 2001, Page(s):389 - 392 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    Automatically switched optical networks (ASON) require a control strategy that determines the optimal distribution of flows over different wavelengths. Such a strategy will increase the profit, by allowing service providers to quickly and effectively define and deploy new service offers. We introduce a demand elasticity based model for wavelength and flow assignment in multiwavelength optical netw... View full abstract»

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  • A stereophonic echo canceling algorithm for correct echo-path estimation

    Publication Year: 2001, Page(s):663 - 665A vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    The authors had proposed a stereophonic echo canceller for correct echo path estimation. We pay attention to the convergence value of the filter coefficient vector of the multichannel least mean squares (MC-LMS) and that of the compact multichannel echo canceller (CEC) and use those differences. Concretely, the coefficient vector of the MC-LMS is converged to a correct echo-path by properly substi... View full abstract»

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  • Neuro-fuzzy control of a semi-active car suspension system

    Publication Year: 2001, Page(s):686 - 689 vol.2
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    A neuro fuzzy controller is designed to improve damping and ride quality of a semi-active car suspension system. A quarter-car model which includes an actuator for active control is used to model the system. Simulations show that the proposed controller improves both suspension travel and ride quality in terms of both vehicle acceleration and dynamic tire loading View full abstract»

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  • Realizing continuous and transparent service using agents

    Publication Year: 2001, Page(s):736 - 739 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    Many peoples are using the Internet and many types of devices have emerged. In this situation, a single user wants to continue to work in anytime and anywhere. Current contents service targets specific devices, so that it cannot support many different types of devices. To realize continuous and transparent services, we propose a new model of ASP. In our proposed model, User Agent and Application A... View full abstract»

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  • Location of mobile terminals using time measurements and survey points

    Publication Year: 2001, Page(s):635 - 638 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    The location of mobile terminals has recently become a topic of much research. One of the more popular methods of radio location is the time difference of arrival (TDoA) method where the location of the mobile terminal is estimated using measurements of the differences in propagation times from the mobile terminal to three or more base stations. The traditional approach used to perform the locatio... View full abstract»

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  • Wireless IP network architecture for cdma2000

    Publication Year: 2001, Page(s):354 - 356 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB) | HTML iconHTML

    In the industry trend toward third generation (3G) cellular systems, a great deal of emphasis has been placed on packet based transport, especially by adapting the Internet Protocol. At the same time, there is a trend across the communications industry to converge voice and data at the transport level. The interests of the major players are accelerating the development of new standards and availab... View full abstract»

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