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Subjective evaluation of single-channel-per-carrier frequency-modulation system for satellite communication

Subjective evaluation of single-channel-per-carrier frequency-modulation system for satellite communication

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  • Author(s): R.J. Kernot 1  and  B.G. Evans 2
    • View affiliations
    • Affiliations: 1: Space Communications Systems Division, Telecommunication Development Department, Post Office, London, UK
      2: Department of Electrical Engineering Science, University of Essex, Colchester, UK
  • Source: Volume 10, Issue 10, 16 May 1974, p. 173 – 175
    DOI:  10.1049/el:19740132 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Electrical Engineers
Published

The capacity advantages already predicted when using single-channel-per-carrier companded frequency modulation on a satellite link are verified in terms of the subjective performance of such a link. The results of subjective tests carried out on a system show an improvement over a conventional satellite circuit containing 10 000 p W0p of noise for almost all talker levels likely to be encountered in practice.

Inspec keywords: carrier communication; frequency modulation; satellite links; channel capacity

Other keywords: noise; communication channels; carrier communication; subjective evaluation; frequency modulation; satellite links

Subjects: Satellite communication systems

References

    1. 1)
      • Evans, B.G., Walters, R.: `An economic satellite communications system for small nations', Proceedings of IEEE international communications conference, 1971.
    2. 2)
      • Richards, D.L., Carter, R.O.: `The WRTC for speech link assessment studies', 20220, British Post Office Research Report, .
    3. 3)
      • Richards, D.L., Wheeler, L.K.: `An intermediate reference system for conversation assessment studies', 239, British Post Office Research Report, .
    4. 4)
      • D.I. Dalgleish , A.G. Reed . (1969) Some comparisons of the traffic carrying capacity of communication satellites using digital techniques with the capacity of satellites using frequency modulation, Digital satelite communication.
    5. 5)
      • Recommendation G103, CCITT White Book, Vol III, Mar Del Plata, 1968.
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