The Radio Channel

  • Bob Swain
  • Peter Hulbert

Abstract

Cordless telecommunications is just another branch of radio communications.1 Its development is rooted in the practical demonstration of mobility by Marconi but its commercial success is only achieved by using the results of the early pioneers, and the many who followed, to make products that the present-day market can accept in terms of applicability, user friendliness, quality, reliability, size, weight, appearance, flexibility, robustness, adaptability, supply, regulatory regime, cost and price. This list (and there are no prizes for adding to it) shows that the product purchasers and/or users are not interested in the radio channel technology. They will not marvel at the cleverness or originality of radio design, but they will expect it to do whatever they wish when they switch on, without having to undergo a training course, and without fail. Even the name cordless telecommunications eschews radio and the basis of product performance comparison will be the wired telephone or terminal with little, if any, licence given to the radio connection. This comparison is inevitable when cordless telecommunications is equated with communications in and around buildings, and not necessarily mobile in character.

Keywords

Microwave Europe Attenuation Radar Hexagonal 

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References

  1. 1.
    WC Jakes (ed), “Microwave mobile communications”, John Wiley, Chichester, 1974Google Scholar
  2. 2.
    K Feher (ed), “Advanced digital communications, systems and signal processing techniques”, Prentice-Hall, Englewood Cliffs NJ, 1987MATHGoogle Scholar
  3. 3.
    RS Swain, “Cordless telecommunications in the UK”, Proceedings of the National Communications Forum 1984, Chicago, September 1984, pp 163–168Google Scholar
  4. 4.
    ETSI-RES 3, “DECT reference document”, Sophia-Antipolis, Nice, FranceGoogle Scholar
  5. 5.
    AJ Motley and AJ Martin, “Radio coverage in buildings”, Proceedings of the National Communications Forum 1988, Chicago, October 1988, pp 1722–1730Google Scholar
  6. 6.
    JM Keenan and AJ Motley, “Radio coverage in buildings”, British Telecom Technology Journal, vol 8, no. 1, January 1990Google Scholar
  7. 7.
    SE Alexander, “Characteristics for building propagation at 900 MHz”, Electronic Letters, vol 19, no. 20, p 860, September 1983CrossRefGoogle Scholar
  8. 8.
    DMJ Devasirvatham, “Radio propagation studies in a small city for universal portable communications”. IEEE Vehicular Technology Conference 1988, pp 100–104, Philadelphia PA, June 1988Google Scholar
  9. 9.
    D Akerberg, ECTEL/ESPA Working Group document no. BCT 18/87, “Additional simulations of the traffic in the TCS/BCT test installation”, 1987 (Ericsson radio document no. TY 87:2062)Google Scholar
  10. 10.
    JCI Chuang, “The effects of time delay spread on portable radio communications channels with digital modulation”, IEEE Journal on Selected Areas in Comm, SAC-5, pp 879–889, June 1987CrossRefGoogle Scholar
  11. 11.
    DMJ Devasirvatham, “Multipath time delay spread in the digital portable radio environment”, IEE Communications Magazine, vol 25, pp 13–21, June 1987CrossRefGoogle Scholar
  12. 12.
    DMJ Devasirvatham, “Delay spread and signal level measurements of 850 MHz radio waves in building environments”, IEEE Transactions on Antennas and Propagation, AP-34, pp 1300–1305, November 1986CrossRefGoogle Scholar
  13. 13.
    RC Bernhardt, “The effect of path loss models on the simulated performance of portable radio systems”, IEEE Global Communications Conference, Dallas, USA, 1989Google Scholar
  14. 14.
    AP Croft, S McCann and WHW Tuttlebee, “Digital European cordless telecommunications system simulation performance results”, IEE Mobile Radio and Personal Communications Conference, Warwick, UK, December 1989Google Scholar
  15. 15.
    RC Dixon, “Spread spectrum systems”, 2nd edn, John Wiley (Wiley-Interscience Publication), New York, 1976Google Scholar
  16. 16.
    F Al-Salihi and LP Straus, “Simulation of cordless communications systems”, Electronic Letters, vol 24, no 12, pp 742–743, June 1988CrossRefGoogle Scholar
  17. 17.
    A Bateman and RJ Wilkinson, “Linearisation of class C amplifiers using Cartesian feedback”, IEEE Workshop on Mobile and Cordless Telephone Communications, London, September 1989Google Scholar
  18. 18.
    S Pasupathy, “Minimum shift keying: a spectrally efficient modulation”, IEEE Communications Magazine, pp 14–22, July 1979Google Scholar

Copyright information

© Springer-Verlag London Limited 1990

Authors and Affiliations

  • Bob Swain
  • Peter Hulbert

There are no affiliations available

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