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Electrical and Computer Engineering, Canadian Journal of

Issue 3/4 • Date Summer-Fall 2008

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Displaying Results 1 - 16 of 16
  • Canadian Journal of Electrical and Computer Engineering - Front cover

    Publication Year: 2008 , Page(s): c1 - c4
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    Freely Available from IEEE
  • Canadian Journal of Electrical and Computer Engineering - Table of contents

    Publication Year: 2008 , Page(s): i - ii
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    Freely Available from IEEE
  • IEEE Canadian Conference on Electrical and Computer Engineering 2008

    Publication Year: 2008 , Page(s): iii - iv
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    Freely Available from IEEE
  • A new design tool to protect industrial long-cable PWM ASD systems against high-frequency overvoltage problems

    Publication Year: 2008 , Page(s): 125 - 132
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1760 KB) |  | HTML iconHTML  

    This work presents a new tool for use in the design of long-cable adjustable-speed drive (ASD) systems. It allows coordination between the inverter, the motor and the cable type and length in order to protect the motor against overvoltages due to the reflected wave. Detailed mathematical formulas describing the transient voltage and current along the cable are first developed in the frequency doma... View full abstract»

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  • Multiple description coding by successive quantization

    Publication Year: 2008 , Page(s): 133 - 138
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (459 KB) |  | HTML iconHTML  

    Two structured multiple description (MD) vector quantization schemes with an iterative technique for designing the codebooks and partitions are proposed. The schemes are derived from the recent theoretical work by Chen et al. In the first scheme, the central decoder is formed by the weighted sum of the side codebooks, whereas the second scheme employs the optimum central decoder. The objective of ... View full abstract»

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  • Selenium-based amorphous silicon flat-panel digital X-ray imager for protein crystallography

    Publication Year: 2008 , Page(s): 139 - 143
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (559 KB) |  | HTML iconHTML  

    This work proposes a large-area detector for protein crystallography based on an amorphous silicon (a-Si:H) thin film transistor (TFT) pixel-array backplane and an overlying amorphous selenium (a-Se) photoconductor for direct conversion of incident X-rays into an image charge. To achieve high sensitivity, avalanche multiplication in a-Se is adopted to make the detector sensitive to each incident X... View full abstract»

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  • Cooperative hybrid multi-camera tracking for people surveillance

    Publication Year: 2008 , Page(s): 145 - 152
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1732 KB) |  | HTML iconHTML  

    In this paper, a novel hybrid visual tracking system for event detection and people tracking is proposed. This surveillance system is composed of a stationary camera and a pan/tilt/zoom (PTZ) camera. The stationary camera has a wide field of view and detects fall and wandering events by means of motion-based visual tracking. The PTZ camera then tracks and follows the person who triggered an event ... View full abstract»

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  • Novel dual auxiliary circuits for ZVT-PWM converters

    Publication Year: 2008 , Page(s): 153 - 160
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1231 KB) |  | HTML iconHTML  

    Novel active auxiliary circuits that allow the power switch in single-switch, pulse-width-modulated (PWM) converters to operate with zero-voltage switching (ZVS) are proposed in this paper. The main feature of these circuits is that the auxiliary switch can operate with a zero-current switching turn-on and turn-off without increasing the peak current stresses of the main switch. In this paper, the... View full abstract»

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  • All-optical processing using light intensity and wavelength recognition

    Publication Year: 2008 , Page(s): 161 - 168
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (901 KB) |  | HTML iconHTML  

    A simple multi-valued processing logic relying on two basic operations, namely, addition and comparison, is presented. These two basic operations have minimal switching levels, since the addition operation is performed without switches and the comparison operation is performed with only one switch. A simplified illustrative model of a system based on this logic is also presented. The paper include... View full abstract»

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  • Design tradeoff analysis of floating-point adders in FPGAs

    Publication Year: 2008 , Page(s): 169 - 175
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (693 KB) |  | HTML iconHTML  

    With gate counts of ten million, field-programmable gate arrays (FPGAs) are becoming suitable for floating-point computations. Addition is the most complex operation in a floating-point unit and can cause major delay while requiring a significant area. Over the years, the VLSI community has developed many floating-point adder algorithms aimed primarily at reducing the overall latency. An efficient... View full abstract»

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  • Combining ESOP minimization with BDD-based decomposition for improved FPGA synthesis

    Publication Year: 2008 , Page(s): 177 - 182
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (743 KB) |  | HTML iconHTML  

    This paper proposes a novel method to improve the utilization efficiency and performance of field-programmable gate arrays (FPGAs). The proposed method, ExorBDD, uses a stage of exclusive-sum-of-product (ESOP) minimization, followed by a stage of decomposition using binary decision diagrams (BDDs). For exclusive OR (XOR)-intensive circuits, experiments were conducted on 19 MCNC benchmark parity ci... View full abstract»

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  • Fixed-switching-frequency DTC control for PM synchronous machine with minimum torque ripples

    Publication Year: 2008 , Page(s): 183 - 189
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (927 KB) |  | HTML iconHTML  

    In this paper, fixed-frequency direct torque control (DTC) of a permanent magnet synchronous motor (PMSM) is presented. In this method, the stator voltage vector is generated according to the increase stator flux components in the stationary frame ( alpha,beta ). A control algorithm based on predictive control to reduce the effect of the computing time on the stator flux vector position is also pr... View full abstract»

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  • Development of an electrothermal simulation tool for integrated circuits: Application to a two-transistor circuit

    Publication Year: 2008 , Page(s): 191 - 200
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1821 KB) |  | HTML iconHTML  

    In this paper a methodology for performing electrothermal analyses on integrated circuits is introduced. Using the relaxation method, standard electrical and thermal simulators, which are often used in the design process, are coupled through an efficient interface program. The simulator is capable of performing steady-state and transient analysis at device and chip levels. A variable-time-step tec... View full abstract»

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  • Optimal routing and wavelength assignment for survivable multifibre WDM networks

    Publication Year: 2008 , Page(s): 201 - 208
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (631 KB) |  | HTML iconHTML  

    Multifibre optical networks use a bundle of fibres to realize a link between two optical nodes. Such networks can offer significant economic benefits over single-fibre networks because of their ability to relax the restrictions imposed by the wavelength continuity constraint and their potential for handling future growth. This paper introduces two new and efficient integer linear program (ILP) for... View full abstract»

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  • A new compact dual-core architecture for AES encryption and decryption

    Publication Year: 2008 , Page(s): 209 - 213
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (344 KB) |  | HTML iconHTML  

    This article presents a new compact architecture, consisting of two independent cores that process encryption and decryption simultaneously, for the Advanced Encryption Standard (AES) algorithm. The corresponding new compact key generation unit with 32-bit datapath is also explored to provide round keys on the fly for encryption and decryption. A novel way to implement ShiftRows/InvShiftRows, one ... View full abstract»

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  • A robust algorithm for text region detection in natural scene images

    Publication Year: 2008 , Page(s): 215 - 222
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (4989 KB) |  | HTML iconHTML  

    In this paper, a new method for detecting text regions in natural scene images is presented. The proposed algorithm is based on the segmentation of objects in a scene, followed by the identification of text objects by a support vector machine (SVM). First, to segment objects in the scene, the input image is separated into chromatic and achromatic regions according to the distribution of red, green... View full abstract»

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Aims & Scope

The role of the Canadian Journal of Electrical and Computer Engineering is to provide scientific and professional activity for its members in Canada, the CJECE complements international journals and will be of particular interest to anyone involved in research and development activities in the field of electrical and computer engineering.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Dr. Shahram Yousefi
Dept. of Electrical and Computer
     Engineering
Queen's University