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Evaluation of metrics for characterising the dispersion of the mobile channel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationUnknown
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages1418 - 1422
ISBN (Print)078031575, 0780331575
StatePublished - Apr 1996
Event46th Vehicular Technology Conference 1996. 'Mobile Technology for the Human Race' - Atlanta, GA, United States


Conference46th Vehicular Technology Conference 1996. 'Mobile Technology for the Human Race'
CountryUnited States
CityAtlanta, GA
Period1/04/96 → …


This paper analyses the suitability of the RMS delay spread and coherence bandwidth when characterising system quality-of-service of QPSK operating in a variety of wideband mobile channels. It is demonstrated that the RMS delay spread is unduly affected by the presence of relatively weak signals with large excess delay, limiting it's effectiveness when characterising the time dispersion. The coherence bandwidth is shown to offer a more general dispersion metric. Furthermore it is indicated that the instantaneous system performance is poorly characterised by the dispersion parameters calculated from the discrete power delay profile (such as the RMS delay spread). The instantaneous delay spread incorporates the effects of pulse shaping and the vector summation which occurs in the instantaneous channel impulse response. Consequently, the instantaneous delay spread is demonstrated to provide a better indication of the instantaneous performance than the RMS delay spread.

Additional information

Conference Proceedings/Title of Journal: IEEE VTC Rose publication type: Conference contribution Terms of use: Copyright © 1996 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, Spring 1996. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • land mobile radio, quadrature phase shift keying, radiowave propagation


46th Vehicular Technology Conference 1996. 'Mobile Technology for the Human Race'

Duration1 Apr 1996 → …
CityAtlanta, GA
CountryUnited States

Event: Conference

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