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IEEE CCECE2002. Canadian Conference on Electrical and Computer Engineering. Conference Proceedings (Cat. No.02CH37373)

12-15 May 2002

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  • IEEE CCECE2002 Canadian Conference on Electrical and Computer Engineering [front matter]

    Publication Year: 2002, Page(s):0_1 - S_45
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  • Author index

    Publication Year: 2002, Page(s):6_1 - 6_12
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  • Keyword Index

    Publication Year: 2002, Page(s):7_1 - 7_12
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  • An analysis of shear horizontal surface acoustic wave propagation under mechanical losses

    Publication Year: 2002, Page(s):1646 - 1651 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (263 KB) | HTML iconHTML

    In piezoelectric materials, two kinds of losses can be distinguished: mechanical and dielectric. The loss effects are introduced in the Christofell formalism via complex elastic and dielectric coefficients, to evaluate the piezoelectric properties of shear horizontal surface acoustic waves. The surface permittivity concept is used to express the influences of losses on phase velocity, and the elec... View full abstract»

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  • Real-time video applications over ABR using FASTRAC-a rate control algorithm

    Publication Year: 2002, Page(s):1565 - 1570 vol.3
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (409 KB) | HTML iconHTML

    The ATM ABR service category was initially designed to support non-real-time applications, e.g., data file transfer. However it is possible for ABR to support real-time applications (such as distributed multimedia applications) by taking advantage of the inherent traffic control capability of ABR and the adaptation ability of real-time applications. This paper consists of two parts. In the first p... View full abstract»

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  • The role of reconciliation in retrieving historical objects in a multi-version object-based system

    Publication Year: 2002, Page(s):1482 - 1486 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    Traditional multiversion database environments use data versioning for historical purposes as well as for issues related to transaction management. Multiversioning can increase concurrency and can be used to execute queries against historical records. This paper shows how this technique can be applied in a multiversion object-based environment. View full abstract»

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  • A spread spectrum acoustic ranging system - an overview

    Publication Year: 2002, Page(s):1242 - 1245 vol.3
    Cited by:  Papers (1)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (314 KB) | HTML iconHTML

    There are spread spectrum systems that are commonly used for ranging. Perhaps the most pervasive system is GPS. Because such a system relies on a high frequency signal, the receiver must have an unobstructed view of the sky. There are situations in which one cannot use GPS, such as in an orchard or indoors. This paper suggests that ranging can be achieved by applying the spread spectrum technique ... View full abstract»

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  • Designing and implementing a mobile ad hoc network testbed

    Publication Year: 2002, Page(s):1559 - 1564 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (341 KB) | HTML iconHTML

    This paper describes our experience in designing and implementing a mobile ad hoc network testbed. The design goal is high efficiency with low cost. Each node runs both the unicast routing protocol and the multicast routing protocols on a dynamic-on-demand basis, and interfaces seamlessly with the existing Internet infrastructure. The most important feature of this testbed is that it can generate ... View full abstract»

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  • Performance analysis of the PetaWeb optical network architecture

    Publication Year: 2002, Page(s):1477 - 1481 vol.3
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    The dramatic increase of Internet users and the development of new high volume Internet applications has a profound impact on the design of next generation optical network (NGON) architectures. In order to cope with the immense diversity of applications and traffic volume, highly dynamic optical networks will be needed. Nortel Networks, proposed one kind of NGON architecture, known as PetaWeb. Pet... View full abstract»

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  • Fuzzy predictive control for in-situ bioremediation

    Publication Year: 2002, Page(s):1616 - 1621 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (425 KB) | HTML iconHTML

    Investigates development of an in-situ bioremediation process control system that can optimize the complex physical, chemical, and biological processes involved in in-situ bioremediation. A hybrid fuzzy predictive control system is constructed for real time control of in-situ bioremediation process. This control system consists of three parts: an input/output interface system, a database system an... View full abstract»

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  • Agent-based routing algorithms on a LAN

    Publication Year: 2002, Page(s):1442 - 1447 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    The AntNet algorithm for adaptive routing is implemented on a LAN using the TCP/IP protocol. A study is made of the relative merits of different reinforcement parameters central to the stable operation of the algorithm. The case of a constant reinforcement leads to slow but dependable performance whereas adaptive reinforcement appears to be sensitive to the window over which statistics are estimat... View full abstract»

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  • TSMLE-based MT-CDMA system in Rician fading channel

    Publication Year: 2002, Page(s):1386 - 1391 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (474 KB) | HTML iconHTML

    Bit error rate (BER) analysis for a two-stage maximum likelihood estimation (TSMLE) based multi-tone code division multiple access (MT-CDMA) system is presented in this paper. The analysis is presented for a slowly Rician fading and frequency selective channel in the indoor environment. A model for the computation of average bit error probability is derived for quadrature phase shift keying (QPSK)... View full abstract»

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  • An iterative multiuser receiver using groupwise MLSE and interference cancellation in a MC-CDMA system

    Publication Year: 2002, Page(s):1236 - 1241 vol.3
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB) | HTML iconHTML

    We propose a low-complexity iterative multiuser receiver using groupwise maximum likelihood sequence estimation (MLSE) combined with interference cancellation for a turbo coded MC-CDMA system. It is based on grouping the active users according to their signal strengths and computing the log-likelihood ratios by using MLSE in each group at the first iteration. For subsequent iterations, a modified ... View full abstract»

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  • Link adaptation of wideband OFDM systems in multi-path fading channel

    Publication Year: 2002, Page(s):1295 - 1299 vol.3
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (362 KB) | HTML iconHTML

    In OFDM systems, because channel fading on different sub-channels is different; when all OFDM sub-carriers use the same fixed modulation scheme, the error probability is dominated by the sub-carriers with the highest attenuation. Link adaptation can be used to enhance system throughput. According to the current link quality, the most appropriate modulation scheme can be selected on each sub-carrie... View full abstract»

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  • A measure of fairness of service for scheduling algorithms in multiuser systems

    Publication Year: 2002, Page(s):1583 - 1588 vol.3
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (430 KB) | HTML iconHTML

    When considering issues of fairness of scheduling algorithms for packet data in networks, there is no well-defined quantitative value for the "fairness" of the system. Rather, fairness is usually expressed in broader terms. Generally, a system is deemed to be fair if it meets certain criteria on throughput or delay, and unfair if the criteria are not met. For example, a system in which some user r... View full abstract»

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  • AM-SRL: Adaptive Multicast operation of the Supernode-based Reverse Labeling algorithm

    Publication Year: 2002, Page(s):1412 - 1417 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (474 KB) | HTML iconHTML

    In this paper, the supernode-based reverse labeling (SRL), a quality of service (QoS) routing algorithm for mobile ad hoc networks (MANET), is extended to provide adaptive multicast service. The algorithm, termed AM-SRL (Adaptive Multicast operation of Supernode-based Reverse Labeling), adaptively builds an on-demand multicast mesh by exploiting the hierarchical structure of SRL. The virtual route... View full abstract»

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  • Investigation of data transmission logs using the BestFit package

    Publication Year: 2002, Page(s):1555 - 1558 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    Multimedia interactive communication imposes very strict real time performance requirements on the data communication system. The design and modeling of such systems depends on the characteristics and intensity of data traffic to be carried. In this paper we look more closely on data traffic characterization and the network performance of a video conferencing system running on a packet switched LA... View full abstract»

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  • Application Layer Routing Options for efficient data transport over the Internet

    Publication Year: 2002, Page(s):1472 - 1476 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    Most file transfer architectures are based on the conventional client server paradigm with the Internet providing the interconnect infrastructure. In order to avoid/control traffic congestion, the most common scenario is that the server effectively throttles back its transmission when congestion is inferred. In this paper, we propose an alternative mechanism, Application Layer Routing Options (ALR... View full abstract»

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  • Minimal cost design of virtual private networks

    Publication Year: 2002, Page(s):1610 - 1615 vol.3
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB) | HTML iconHTML

    The cost minimization of virtual private networks (VPN) that use the resources of an underlying transport network is the key factor for their successful implementation. The investigation in this paper is focused on 'network based VPNs', where the operation of the VPN is outsourced to an Internet Service Provider (ISP). The interest in such solutions is generated both by customers seeking to reduce... View full abstract»

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  • Communicating over white Gaussian interference networks with feedback

    Publication Year: 2002, Page(s):1261 - 1264 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    White Gaussian interference networks with K messages, T transmitters and R receivers are considered. The messages are transmitted through the network in a point-to-point manner, i.e., each message is encoded by exactly one transmitter and is destined for exactly one receiver. It is further assumed that feedback is available so that each transmitter sees the outputs of the receivers to which it is ... View full abstract»

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  • A middleware based approach for designing routing protocols

    Publication Year: 2002, Page(s):1436 - 1441 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB) | HTML iconHTML

    The design and architecting for new routing protocols is an expensive task; either in time-consumption or costs. Routing protocols are complex systems; they manage distributed network state (sometimes the whole network), in order to create and maintain the routing databases. Existing routing protocol implementations are compact, bundling together a database, a (optimal) path calculation algorithm ... View full abstract»

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  • Admission control algorithm for wireless communication networks considering adjustable channel separation

    Publication Year: 2002, Page(s):1380 - 1385 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (459 KB) | HTML iconHTML

    We consider the problem of real-time distributed admission controls and a centralized static sequential homing policy for channelized wireless communication networks. To maximize the spectrum efficiency, we study the effect of adjustable channel separation together considering generic channel interference on different propagation environments. For purpose of maximizing system revenue, sequential h... View full abstract»

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  • Capacity analysis of WCDMA-based packet data mobile cellular network with rate adaptation

    Publication Year: 2002, Page(s):1231 - 1235 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB) | HTML iconHTML

    Rate control is an important way to allocate radio resources when a packet data service is introduced in the CDMA cellular network. It can compensate some shortcomings when the system just uses power control and can improve the system capacity. In this paper, we focus on analysis of the CDMA system capacity when using the rate control method. We do a theoretical analysis and computer simulations o... View full abstract»

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  • Hadamard-Craigen error correcting codes

    Publication Year: 2002, Page(s):1288 - 1294 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB) | HTML iconHTML

    This paper presents a block coding scheme based on a new construction of block-circulant Hadamard matrices. We describe this unified construction of Hadamard matrices of order 2tp where p is any odd number and t≥4 (depends on p), explaining how the block-circulant structure of the matrices contributes to more efficient coding. We introduce HC codes that can be implemented in software... View full abstract»

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  • Multifractal characterization for classification of telecommunications traffic

    Publication Year: 2002, Page(s):1538 - 1544 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB) | HTML iconHTML

    A novel multifractal approach to telecommunications traffic classification is presented as an improvement over traditional traffic classifiers. The fundamental advantages of using multifractal measures include normalization and a very high compression ratio of a signature of the traffic, thus leading to more reliable and faster implementations, and the ability to add new traffic classes without re... View full abstract»

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