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Electrical and Computer Engineering, Canadian Journal of

Issue 2 • Date April 1991

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Displaying Results 1 - 12 of 12
  • Canadian Journal of Electrical and Computer Engineering - Front cover

    Page(s): c1
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    Freely Available from IEEE
  • Inside front cover

    Page(s): c2
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  • Table of contents

    Page(s): 1
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  • IEEE annual election: President's newsletter

    Page(s): 42 - 43
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  • Innovation through information technology: Shaping the future at Canada Wire

    Page(s): 44 - 46
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    Canada Wire has invested heavily in the area of information technology and is now applying this to multi-million dollar, computer-controlled dry-cure and full triple-extrusion equipment. Information technology, process control and processing equipment are now established within Canada Wire's manufacturing plants. The system for monitoring and controlling the manufacturing processes is called CAMICS. The CWIC LINK system links Canada Wire to its key customers giving online access to databases containing information such as inventory status and restocking dates, order status, product catalogues and account status. View full abstract»

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  • Modified series and parallel adaptors that lead to reduced sensitivity in wave digital filters

    Page(s): 47 - 52
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    By replacing multipliers in conventional series and parallel adaptors by digital subnetworks comprising multipliers whose constants are as far as possible machine representable, modified series and parallel adaptors are obtained whose operation is less dependent on multiplier constants that are not machine representable. Conventional and modified adaptors are then used to design several digital filters and the effects of coefficient quantization are investigated. The results obtained show that wave digital filters implemented with the modified adaptors are significantly less sensitive than filters implemented with conventional adaptors. View full abstract»

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  • Coding and optimum baseband combining for wide-band TDMA indoor wireless channels

    Page(s): 53 - 62
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    Optimum baseband combining with coherent BPSK/QPSK is an attractive technique for wide-band TDMA portable communication radio links in view of its ability not only to combat dispersive fading but also to cancel cochannel interference. The performance of such a scheme for data rates ranging from 1 to 20 Mbits/s is investigated. It is shown that convolutional coding with soft-decision Viterbi decoding can be a viable alternative to increasing the space diversity order even in the absence of interleaving if the effective diversity order is sufficiently large. A number of performance curves for various combinations of transceiver and channel parameters are presented. View full abstract»

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  • High-angular tolerance receiver for atmospheric optical links

    Page(s): 63 - 67
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    An application of optical tapers to receivers for atmospheric optical links is presented. The work is concerned with a simple optical receiver which has a high tolerance to angular misalignments, while supporting a high bit rate by using a photodiode with a small active area. Both the theoretical and the experimental parts of the work are described. View full abstract»

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  • A microprocessor-based duplex fault-tolerant controller for industrial process control

    Page(s): 68 - 73
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    Reliability is one of the fundamental considerations in the design of industrial control equipment. A microprocessor-based hybrid duplex fault-tolerant system (HDS) is proposed which has high reliability to meet this demand although its hardware structure is simple. The hardware configuration of HDS and the fault tolerance of this system are described. The switching control strategies in HDS are studied in detail. Disputes between two subsystems are avoided due to the highly modular structure and the efficient fault detection. Reliability estimation methods for this system are also developed. The implementation of fault tolerance in HDS is software intensive. This system is specially designed for industrial process control. View full abstract»

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  • A method for low flow analysis on unsymmetrical radial distribution systems

    Page(s): 74 - 80
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    A method for the analysis of unsymmetrical radial distribution feeders containing unbalanced loads is proposed. A description of the method and a single-phase example are given. The method's results are compared with theoretical results for a uniformly loaded three-phase line, and a load flow calculation on a three-phase unbalanced feeder is performed. The convergence properties of the method are discussed. View full abstract»

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  • [Back inside cover]

    Page(s): c3
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  • [Back cover - [advertisement]]

    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