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Canadian Journal of Electrical and Computer Engineering

Issue 1 • Date Jan. 1991

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

    Publication Year: 1991, Page(s): c1
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  • Inside front cover

    Publication Year: 1991, Page(s): c2
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  • Table of contents

    Publication Year: 1991, Page(s): 1
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  • President's message

    Publication Year: 1991, Page(s): 2
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  • Report from the director of publications and conferences

    Publication Year: 1991, Page(s): 2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB)

    I am pleased to report to you that during 1990, the Canadian Journal of Electrical and Computer Engineering (CJECE) and the Canadian Conference on Electrical and Computer Engineering (CCECE) have again received the enthusiastic support of researchers and engineers from Canada and abroad. View full abstract»

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  • Call for papers

    Publication Year: 1991, Page(s):3 - 4
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  • Error-trapping Viterbi decoding for type-I hybrid-ARQ protocols

    Publication Year: 1991, Page(s):5 - 12
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1537 KB)

    The partial path metrics generated during Viterbi decoding provide side information that can be used in the development of a type-I hybrid-ARQ error control system. Each path through the Viterbi decoding trellis is equivalent to a path through a weighted directed graph. Error patterns in decoded information blocks thus correspond to cycles in the graph. A sliding window is used to trap these cycle... View full abstract»

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  • A countermeasure to improve outage performance of interference-limited microwave radio links

    Publication Year: 1991, Page(s):13 - 18
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1991 KB)

    A hybrid radio architecture is proposed. A performance model is presented. The associated outage performance is evaluated for a hybrid radio route which consists of a number of digital point-to-point microwave radio channels with a parallel atmospheric optical link protecting all of them against frequency-selective fading and RF interference. The numerical results show an acceptable performance ca... View full abstract»

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  • Speech compression with Huffman codes

    Publication Year: 1991, Page(s):19 - 22
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1825 KB)

    A prefix code method for compressed digital storage of zero-crossing speech is reported. Stored files occupying 4 to 6 kilobits per original second can be created and decompressed in real time using only a desktop computer equipped with an analogue-to-digital/digital-to-analogue converter, and software. Since no special signal-processing hardware is required, the technique can be used for voice st... View full abstract»

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  • Performance of an optical DFSK system using optical self-heterodyne detection

    Publication Year: 1991, Page(s):23 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1661 KB)

    The performance of an experimental 45 Mb/s optical differential frequency shift keying (DFSK) system using optical self-heterodyne detection (OSHD) has been evaluated. In OSHD, the intermediate frequency is obtained by mixing the received optical signal with its delayed version. Therefore, in such a receiver, an optical local oscillator is not required, which greatly simplifies the receiver design... View full abstract»

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  • Computer modelling of waiting time jitter in digital transport networks

    Publication Year: 1991, Page(s):27 - 33
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1503 KB)

    A computer modelling technique is described for the prediction and evaluation of waiting time jitter generation characteristics. The traditional analysis approach has been to apply existing theoretical models which assume ideal circuit implementations and are limited to simple multiplex formats. Time domain simulation techniques based on bit-by-bit sampling have been employed more recently to succ... View full abstract»

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  • Single and dual multi-dwell synchronization for a direct-sequence spread spectrum receiver

    Publication Year: 1991, Page(s):34 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1099 KB)

    Investigates factors affecting the coarse synchronization performance of a multi-dwell circuit for direct sequence spread spectrum receivers. The influence of the search/verification/lock (SVL) strategy, detector threshold and dwell time on the speed of acquisition is analyzed. For a selected multi-dwell SVL strategy, the mean, variance and distribution of the acquisition time are presented for se... View full abstract»

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  • [Back inside cover]

    Publication Year: 1991, Page(s): c3
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  • [Back cover - [advertisement]]

    Publication Year: 1991, Page(s): c4
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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