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Canadian Journal of Electrical and Computer Engineering

Issue 4 • Fall 2007

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Displaying Results 1 - 14 of 14
  • Canadian Journal of Electrical and Computer Engineering - Front cover

    Publication Year: 2007, Page(s):C1 - C4
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  • Table of contents

    Publication Year: 2007
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  • Message from the Editors

    Publication Year: 2007
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  • Message from the Editors

    Publication Year: 2007
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  • CCECE 2007

    Publication Year: 2007
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  • A low-power 75 dB digitally programmable variable-gain amplifier in 0.18μm CMOS

    Publication Year: 2007, Page(s):181 - 186
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1322 KB) | HTML iconHTML

    Variable-gain amplifiers (VGAs) are essential building blocks of many communication systems. In this paper, a monolithic low-power digitally programmable VGA with 75 dB of gain range is presented. The core of the design is based on a low-distortion source-degenerated differential amplifier structure. The gain is varied by changing the source-degeneration resistor and tuning the resistors in the co... View full abstract»

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  • ISI-free pulses for high-data-rate ultra-wideband wireless systems

    Publication Year: 2007, Page(s):187 - 192
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (765 KB) | HTML iconHTML

    Modified intersymbol interference (ISI)-free pulses and ISI-free band-limited polynomial pulses for ultra-wideband (UWB) communication systems are proposed to provide the possibility of very high data rates not achievable by conventional pulses and the pulse design algorithms available in the literature. The power spectrum of the proposed pulses fits the Federal Communications Commission (FCC) spe... View full abstract»

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  • The role of viewing angle in integrating the senses of vision and touch for perception of object softness

    Publication Year: 2007, Page(s):193 - 198
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (774 KB) | HTML iconHTML

    Enabling surgeons to interact intuitively and accurately with virtual reality (VR)-based environments using their senses of vision and touch (e.g., to distinguish the softness of tissues) is a challenging issue for surgical planning. This paper presents the results of two experiments that were conducted to determine how viewing angle affects the perception of object softness and to investigate the... View full abstract»

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  • Integer QP relaxation-based algorithms for intercarrier-interference reduction in OFDM systems

    Publication Year: 2007, Page(s):199 - 205
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1111 KB) | HTML iconHTML

    Orthogonal frequency-division multiplexing (OFDM) modulation can be utilized to deal with severe channel conditions without complex equalization. However, in a fast-fading channel, Doppler spread caused by user mobility destroys the orthogonality among subcarriers, prompting intercarrier interference (ICI). In this paper, the OFDM ICI reduction problem is formulated as a combinatorial optimization... View full abstract»

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  • A high-resolution, multi-template deconvolution algorithm for time-domain UWB channel characterization

    Publication Year: 2007, Page(s):207 - 213
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (581 KB) | HTML iconHTML

    Time-domain ultra-wideband (UWB) channel characterization with deconvolution has become increasingly popular. However, owing to the nature of the frequency-selective non-line-of-sight channel on a general wideband channel-sounding pulse, the a priori assumption of the CLEAN deconvolution algorithm does not necessarily hold. Moreover, the assumption of a fixed a priori can easily be violated since ... View full abstract»

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  • Domain of stability of ac/dc power systems

    Publication Year: 2007, Page(s):215 - 220
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (641 KB) | HTML iconHTML

    The domain of stability (DOS) of a dynamic system is the sub-state space within which the system converges to a stable equilibrium state if the operating point varies because of a disturbance. The cell mapping technique has been widely used to find the DOS of second-order systems. However, there is no generic method reported in the literature for finding the DOS of any system of order greater than... View full abstract»

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  • Activity-sensitive clock design for low power consumption

    Publication Year: 2007, Page(s):221 - 226
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    This paper explores an activity-sensitive clock gating technique for low-power design of VLSI clock networks. The concept of logic distance based on module activity information is introduced, and its relationship with the power consumption of the clock network is presented. A binary clock tree is built based on the logic distance between different modules to optimize the power consumption due to t... View full abstract»

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  • CCECE 2008 - 21st Annual Canadian Conference on Electrical and Computer Engineering - Preliminary call for papers and proposals

    Publication Year: 2007
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  • CCGEI 2008 - Preliminary call for papers

    Publication Year: 2007
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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.

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Meet Our Editors

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