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Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555)

13-16 May 2001

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  • Canadian Conference on Electrical and Computer Engineering 2001 [front matter]

    Publication Year: 2001, Page(s):i - xxxiii
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  • Author's Name

    Publication Year: 2001, Page(s):1 - 13
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  • Multiphase control of a boost converter for a renewable energy system

    Publication Year: 2001, Page(s):1029 - 1034 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB) | HTML iconHTML

    A 5 kW DC-DC boost converter, adapted to integrated renewable energy applications, is placed at the point for adequately supplying to a DC bus, regenerated energy from a hydrogen fuel cell. The converter is based on the technique of multiphase control of chopping. This technique permits the augmentation of the output and of reducing the rate of harmonics. The authors present a new approach of the ... View full abstract»

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  • The use of conceptual models during the design of new telecommunication services

    Publication Year: 2001, Page(s):1163 - 1168 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB) | HTML iconHTML

    The increasing demand for new telecommunication services encourages service providers to extend their service offerings. However, the development of such services and their deployment on the public network are non-trivial tasks. Experience has shown that the use of conceptual models can assist in the development of new systems. This paper investigates the usefulness of conceptual models containing... View full abstract»

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  • Image segmentation using MRI vertebral cross-sections

    Publication Year: 2001, Page(s):1303 - 1307 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB) | HTML iconHTML

    Computer assisted spinal surgery requires the development of a 3-D image of a patient's spine. A method is being developed to construct such a 3-D spinal image from axial MRI cross-sections, using a deformable template. This paper outlines techniques used to register the model with the patient data. First an algorithm based on symmetry of the anatomy is developed to determine the position and orie... View full abstract»

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  • Load-balanced wireless ad hoc routing

    Publication Year: 2001, Page(s):1157 - 1161 vol.2
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    An ad hoc wireless mobile network is an infrastructureless mobile network that has no fixed routers; instead, all nodes are capable of movement and can be connected dynamically in an arbitrary manner. In order to facilitate communication of mobile nodes that may not be within the wireless range of each other, an efficient routing protocol is used to discover routes between nodes so that messages m... View full abstract»

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  • A review of current raw SAR data compression techniques

    Publication Year: 2001, Page(s):925 - 930 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    Synthetic aperture radar (SAR) is a sophisticated technique of all-weather radar imaging capable of producing fine detailed images from a moving platform. When such a radar is placed on-board a satellite, compression of the raw SAR signal is necessary to reduce the huge amount of collected data for the downlink to a ground station within the bandwidth constraints. This is further exasperated by ne... View full abstract»

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  • Analysis of the compression of the spectral density of a surface EMG signal by methods based on the FFT

    Publication Year: 2001, Page(s):1403 - 1408 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    This article presents the application of methods of spectral analysis based on the FFT algorithm to the compression of the spectral density of the power of a surface EMG signal. This change is frequently generalised by the average and median frequencies. The modal frequency is another characteristic able to be calculated, but, it is also demonstrated that it does not permit credible evaluations of... View full abstract»

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  • Non-coherent MT-CDMA system with diversity combining

    Publication Year: 2001, Page(s):1351 - 1356 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    This paper is an extension of the previous work of Rahman and Sesay (see Proceedings of IEEE Canadian Conference on Electrical and Computer Engineering, Halifax, Canada, p.245-49, 2000) where they evaluated the performance of a non-coherent MT-CDMA system using differential binary phase shift keying (DBPSK) modulation. Here, we investigate the performance of the same system using diversity combini... View full abstract»

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  • A new simple ∞OH neuron model as a principal component analyzer

    Publication Year: 2001, Page(s):981 - 986 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    A new approach to unsupervised learning in a single-layer neural network is discussed. An algorithm for unsupervised learning based on the Hebbian learning rule is presented. A simple “almost linear” neuron model is analyzed. The adopted neuron model does not perform just simple summation of the weighted inputs but also performs integration. In addition, the adopted structure represent... View full abstract»

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  • Capacity analysis of CDMA networks with smart antenna

    Publication Year: 2001, Page(s):1333 - 1336 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    The paper investigates the capacity improvement for CDMA wireless communication systems with base-station antenna array. We model the effects of Rayleigh fading, log-normal shadowing, multiple access interference, multi-tier cells, directional beam and thermal noise. Analytical results and computer simulations show that smart antenna at the base station can dramatically improve the reverse channel... View full abstract»

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  • Probabilistic harmonic power flow for percentile evaluation

    Publication Year: 2001, Page(s):831 - 838 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    This paper describes a new probabilistic method for harmonic analysis of multiconverter power systems which allows the evaluation of the percentiles of the voltage and current harmonics, that are the probabilistic quantities of interest in the most recent international recommendations or standards. In order to reduce the computational efforts, the proposed method firstly linearizes the well known ... View full abstract»

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  • A robust model parameter extraction technique based on meta-evolutionary programming for high speed/high frequency package interconnects

    Publication Year: 2001, Page(s):1151 - 1155 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    A high efficiency version of the evolutionary algorithm called meta-evolutionary programming (meta-EP) is proposed for extraction of the circuit model parameters of the basic structures in the complex high speed/high frequency package interconnects such as flip chip interconnects. The algorithm is integrated with a diversity enhancement method called niching in order to decrease the chance of prem... View full abstract»

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  • Input state feedback linearization control of a three-phase three-level neutral point clamped rectifier

    Publication Year: 2001, Page(s):799 - 804 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    An exact nonlinear multiple-input multiple-output (MIMO) state space mathematical model of the power circuit of pulse-width-modulation (PWM) three-phase three-level neutral point clamped AC/DC rectifier was developed. Using this nonlinear model, an input/output feedback linearization was then designed. Analytical expressions of the linearizing control law (LCL) were derived. The resulting lineariz... View full abstract»

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  • Extending the capability of Mars Umbilical Technology Demonstrator

    Publication Year: 2001, Page(s):1211 - 1216 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB) | HTML iconHTML

    The objective of this project is to expand the capabilities of the Mars Umbilical Technology Demonstrator (MUTD) at NASA Kennedy Space Center. The MUTD shall provide electrical power and fiber optic data cable connections between two simulated mars vehicles, about 1000 m apart. The wheeled mobile robot Omnibot is used to provide the mobile base for the system. The mate-to umbilical plate is mounte... View full abstract»

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  • Parallel implementation for image rotation using parallel virtual machine (PVM)

    Publication Year: 2001, Page(s):1297 - 1301 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    Many image processing algorithms are particularly suited to distributed computing because these images are difficult and time consuming to analyse. Furthermore, existing algorithms contain explicit parallelism, which can be efficiently exploited by processing arrays. A good example of an image processing operation is the geometric rotation of a rectangular bitmap. This paper shows how this can be ... View full abstract»

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  • Modeling the correlation structure of images in the wavelet domain

    Publication Year: 2001, Page(s):1123 - 1127 vol.2
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    In this paper we investigate the correlation structure of the wavelet coefficients corresponding to random fields. The context of this work is the study of Bayesian approaches to wavelet shrinkage for the purposes of image denoising. This paper concentrates on both within-scale and across-scale statistical dependencies for a variety of wavelets and random fields, with examples provided for both 1-... View full abstract»

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  • Implementation of MPEG system target decoder

    Publication Year: 2001, Page(s):943 - 9946 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    The MPEG-2 system standard provides methods for multiplexing a number of elementary MPEG streams into a single system stream. It also defines methods to maintain the synchronization and timing of compressed streams. This is achieved by exact definitions of the times at which data arrive to the decoder, timing of data flow in the decoder and timing of decoding and presentation events. For this purp... View full abstract»

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  • FPGA implementation of MD5 hash algorithm

    Publication Year: 2001, Page(s):919 - 924 vol.2
    Cited by:  Papers (38)  |  Patents (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    In information security, message authentication is an essential technique to verify that received messages come from the alleged source and have not been altered. A key element of authentication schemes is the use of a message authentication code (MAC). One technique to produce a MAC is based on using a hash function and is referred to as an HMAC. The Message Digest 5 (MD5) is one of the algorithm... View full abstract»

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  • Spatio-temporal equalization and multiuser detection for DS-CDMA systems: a semi-blind approach

    Publication Year: 2001, Page(s):1345 - 1350 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB) | HTML iconHTML

    A novel strategy for semi-blind spatio-temporal equalization and multiuser detection for short-burst asynchronous DS-CDMA systems is proposed. The technique is based on first performing channel identification (through a semi-blind subspace-based algorithm) as an aid for semi-blind equalization (via the constant modulus algorithm (CMA)). This two step process allows us to improve upon the tradition... View full abstract»

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  • Neural networks and fuzzy logic in electrical engineering

    Publication Year: 2001, Page(s):975 - 980 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    Control system packages have become essential ingredients of both undergraduate and graduate courses in the control area. This work describes our experience with the use of MATLABTM with its fuzzy logic and neural networks toolboxes in electrical engineering control courses. While some of the methods in the area of intelligent systems and control have significant benefits to offer, engi... View full abstract»

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  • Smart antenna testbed for DS-CDMA systems

    Publication Year: 2001, Page(s):1327 - 1332 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB) | HTML iconHTML

    In CDMA communication systems, smart antenna can be used to suppress multipath fading with antenna diversity and to increase the system capacity by supporting multiple co-channel users. Although many existing and new array signal processing techniques are being proposed for the smart antenna scheme, most of the performance evaluation to date relied on computer simulations or theoretical analysis b... View full abstract»

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  • The benefits of implementing distribution automation and system monitoring in the open electricity market

    Publication Year: 2001, Page(s):825 - 830 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    In the new business environment, rates for monopoly distribution services (wires), regulators are trying to create a balance between the dollars paid by the consumers and rate of return that the shareholders are allowed to earn. The regulator in Ontario has implemented “performance based regulation” (PBR) to regulate the “wires” part of the distribution system. In PBR, qual... View full abstract»

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  • Reliable multicast transmissions using forward error correction and automatic retransmission requests

    Publication Year: 2001, Page(s):1145 - 1150 vol.2
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB) | HTML iconHTML

    Multicasting over a network allows a sender to distribute data to multiple receivers. The sender simply sends the data in question to a pre-determined multicast address, and all receivers interested in this data can listen for it. Multicasting is based on an unreliable transport. A data packet sent by the sender may or may not reach an interested receiver and packets received may be out of order. ... View full abstract»

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  • A novel PWM current control method for AC harmonic elimination by active power filter

    Publication Year: 2001, Page(s):793 - 797 vol.2
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    This paper presents a new PWM current control method of a shunt current source active power filter which makes it possible to eliminate the harmonics produced by a three-phase rectifier. The proposed control strategy, which is based on the frequency domain approach, is appropriate for a six-switch current source inverter rather than the fifteen switches topology that has been proposed in the liter... View full abstract»

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