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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  • Dynamic resource allocation in QoS-enabled/MPLS supported virtual private networks and its Linux based implementation

    Publication Year: 2002, Page(s):1448 - 1454 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    This paper describes a proposal for the support of quality of service over virtual private networks (VPN). We combine DiffServ, MPLS and a dynamic resource allocation technique in order to provide a QoS-enabled VPN. We apply dynamic resource allocation using traffic predictors. Our predictor assumes that the statistical behavior of aggregate traffic streams is statistically described through &alph... View full abstract»

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  • Study of QoS in UTRAN

    Publication Year: 2002, Page(s):1605 - 1609 vol.3
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB) | HTML iconHTML

    Providing services with controlled quality of service (QoS) is critical to 3rd generation cellular systems. Introduction of IP to the wireless network makes it easier to guarantee the end-to-end QoS. The paper analyzes the mapping between QoS defined in UMTS bearer services and core network QoS definition in order to ensure the end-to-end QoS. The Differentiated Service is introduced into the wire... 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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  • Managing end-to-end QoS

    Publication Year: 2002, Page(s):1600 - 1604 vol.3
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    Efficient network management can provide improved flexibility, scalability and robustness by distributing monitoring, analysis and control functionality throughout the networks. End-to-end (wired and wireless) QoS management faces big new challenges. The paper discusses both the online monitoring and the offline inter-network analysis. Monitoring methods in the core networks and the wireless acces... View full abstract»

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  • Inter-domain adaptive traffic engineering for IP differentiated services MPLS-based networks

    Publication Year: 2002, Page(s):1527 - 1531 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (497 KB) | HTML iconHTML

    With the dramatic increase of the capacity of the Internet core, it has become an inherently challenging task to provide strict delay bound guarantees to applications such as multimedia, voice over IP, interactive distance learning, and interactive distribution simulations such as those based on distributed interactive virtual environments. The provision of a seamless integration of these applicat... 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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  • 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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  • Performance analysis of multimedia applications in Differentiated Services networks

    Publication Year: 2002, Page(s):1594 - 1599 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (469 KB) | HTML iconHTML

    In this paper, we present simulation results assessing the performance of DiffServ-capable networks supporting real time multimedia traffic. We evaluate the performance of voice traffic, H263 video traffic and distributed interactive virtual environments (DIVE) applications with Web background traffic in a DiffServ-capable network. Particularly, the performance of weighted fair queuing (WFQ) algor... View full abstract»

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  • Performance evaluation for real-time traffic in differentiated services capable IP network

    Publication Year: 2002, Page(s):1522 - 1526 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (463 KB) | HTML iconHTML

    With the rapid development of network technology, deployment of real-time applications such as video, voice and virtual reality over network become more popular than ever. However, the best effort model, existing over the Internet cannot satisfy the QoS requirements of real-time applications. In order to make Internet quality of service (QoS) capable, the IETF proposed a series of protocols and al... 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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  • Turbo coded OFDM for wireless local area networks

    Publication Year: 2002, Page(s):1363 - 1367 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (399 KB) | HTML iconHTML

    A new block turbo coded-OFDM (BTC-OFDM) system is proposed for wireless local area network (WLAN) applications to provide better performance and more efficiency compared to the IEEE802.11a standard. The proposed scheme uses the same parameters for OFDM as given in IEEE802.11a. This BTC-OFDM utilizes the diversity in both the time and frequency domains to achieve higher performance and more robustn... View full abstract»

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  • Evaluating RED performance in wireless base-station under self-similar traffic

    Publication Year: 2002, Page(s):1545 - 1549 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    We simply review some buffer management mechanisms. In particular, we study the performance of the random early detection (RED) algorithm by simulation in a packet cellular wireless network. Using ns-NOAH simulation the throughput and queue size of the base-station with RED algorithm are studied in an environment under self-similar traffic. The results show that there are little performance differ... 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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  • Dynamic support of service differentiation in wireless networks

    Publication Year: 2002, Page(s):1325 - 1330 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (506 KB) | HTML iconHTML

    Wireless networks are becoming progressively the access technology of preference to the global Internet, while fast backbone wired networks (mostly optical IP based) will be transporting large volumes of aggregate traffic. This scenario is one of the main visions set for 4th generation wireless networks. However, in order for this vision to become reality, new features need to be introduced in the... View full abstract»

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  • Proxy-based connection-splitting architectures for improving TCP performance over satellite channels

    Publication Year: 2002, Page(s):1430 - 1435 vol.3
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (473 KB) | HTML iconHTML

    Reliable transport protocols, such as TCP, have been designed and tuned for traditional wired networks, with little consideration given to wireless environments, such as satellite networks. TCP performs relatively well on such wired networks by adapting to end-to-end delay and to losses caused by congestion. However, in the case of satellite links, due to the special attributes of these links, suc... View full abstract»

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  • Applying OFDM in the next generation mobile communications

    Publication Year: 2002, Page(s):1589 - 1593 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (403 KB) | HTML iconHTML

    In future mobile communications, there are two important issues: one is to provide broadband (up to 10 Mbps or above) services, and the other is to utilize different radio access networks and radio resources in a more efficient way. For the first purpose, OFDM is one of the competitive schemes. This paper presents the possible characters of next generation mobile communications and discusses some ... View full abstract»

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  • Fuzzy connection admission control for self-managed networks

    Publication Year: 2002, Page(s):1516 - 1521 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (389 KB) | HTML iconHTML

    In this paper, we present an algorithm for connection admission control (CAC) in a high speed data network. Our algorithm uses on-line measurement and off-line simulation to estimate the amount of bandwidth required to meet the request of a set of active sources and the actual use of the bandwidth. We introduce the concepts of Customer Satisfaction Factor (CSF) and Proportion of the Used Bandwidth... View full abstract»

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  • Unequal power assignment strategy for 3G system and the application in AMR

    Publication Year: 2002, Page(s):1493 - 1498 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    An unequal power assignment strategy 3G system is proposed in this paper, which aims to maximize the admission capacity of one cell. Through the analysis of multiple access interference (MAI) for the uplink of the 3G system, a formula to calculate the optimal power ratio for multimedia traffic is deduced. The performance of the novel strategy in a 3GPP-FDD system with integrated speech and data tr... View full abstract»

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  • Iterative packet combining scheme for broadband packet transmission

    Publication Year: 2002, Page(s):1221 - 1225 vol.3
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    An iterative packet combining technique based on the recursive systematic convolutional (RSC) codes, for automatic repeat request (ARQ) scheme is investigated for synchronous multicarrier code division multiple access (MC-CDMA) under a frequency selective fading channel. The multiple turbo decoding principle of Divslaver and Pollara (1995) is used to combine the retransmission packets. The through... 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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  • Queueing model for Bluetooth multipoint communications

    Publication Year: 2002, Page(s):1357 - 1362 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    The purpose of this paper is to present a new queueing model for Bluetooth multipoint connection systems. Such a model will handle an ad-hoc topology such that there is a way to ensure that higher priority tasks are given "right of way" than lower priority tasks. Bluetooth communicates on the 2.4 GHz ISM band, and can be used in fixed and/or portable devices. A queueing model is needed to study th... View full abstract»

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