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Electronics & Communication Engineering Journal

Issue 4 • Aug. 1993

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Displaying Results 1 - 6 of 6
  • Digital signal processing 2. Spectral analysis

    Publication Year: 1993, Page(s):212 - 220
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (711 KB)

    For pt.1 see ibid., vol.5, no.1, p.13 (1993). The subject of the paper is the estimation of the spectra of signals and both classical estimation methods and modern model-based methods are discussed. These techniques are compared and results are presented which demonstrate the superior resolution which is obtained with modern autoregressive spectral analysis methods. Examples are given of the appli... View full abstract»

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  • Optical telecommunications-future prospects

    Publication Year: 1993, Page(s):221 - 232
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1033 KB)

    Optical technology is already the dominant carrier of global information. It is also central to the realisation of future networks which have the capabilities demanded by society. For example, essentially unlimited bandwidth to convey services of any kind, full transparency that allows terminal-only upgrades in capacity, and flexible routeing of channels are some of the key features that cannot be... View full abstract»

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  • Fractals and image representation

    Publication Year: 1993, Page(s):233 - 239
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (618 KB)

    For some years now, 'fractals' have provided spectacular displays (which have seemingly hypnotised both the popular technical press and the 'media') on computer workstations equipped with high-power graphics processors, and also provoked much controversy with regard to their potential for mimicking real-world imagery. The authors briefly describe the theoretical background of fractal representatio... View full abstract»

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  • Block versus trellis: an introduction to coded modulation

    Publication Year: 1993, Page(s):240 - 248
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (897 KB)

    Coded modulation has had a very significant impact on the communications scene in the decade or so since its introduction, finding practical applications from voice-band modems for telephone lines to deep-space communications. The paper introduces the principles of coded modulation and describes the two main schemes: block coded modulation (BCM) and trellis coded modulation (TCM). In particular it... View full abstract»

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  • Wideband propagation measurements of short range millimetric radio channels

    Publication Year: 1993, Page(s):249 - 254
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (534 KB)

    There is an increasing emphasis to extend the services available on fixed telecommunication networks to the mobile user. One area of the RACE 1043 project examined the possibility of universal mobile services within future integrated broadband communications networks. Essential to the feasibility of such a scheme is an understanding of the wideband characteristics of the radio channel. The article... View full abstract»

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  • A practical strategy for EMC design

    Publication Year: 1993, Page(s):257 - 264
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (759 KB)

    The introduction of the European EMC Directive has made it very important that engineers design for EMC in their products from the start. The paper describes a strategy to ensure that EMC aspects of design are considered in a logical sequence during development. This strategy is discussed, checklists for EMC design are introduced and a number of important design areas highlighted.<> View full abstract»

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