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Bandwidth-dependent modelling of small-scale fade depth in wireless channels

  • Ben Allen
    ,
  • Wasim Q. Malik
    ,
  • David J. Edwards
Research Output: Contribution to journal Article Peer-review

Abstract

In this paper, the relation between small-scale fade depth and channel bandwidth in an indoor environment is investigated. The fade depth, a measure of the signal power variability over a local region in space, is evaluated for arrowband, wideband and ultrawide-band channels. The experimental analysis is based on frequency-domain measurements in the 3.1–10.6 GHz microwave band. Physical insight into the fading process is provided, and the effect of increasing bandwidth and temporal resolution is discussed. A dual-slope empirical model is developed, which accurately describes the relationship between fade depth and channel bandwidth. It is demonstrated that the fade depth, considered at the three standard deviation values, converges to about 4 dB at 1 GHz bandwidth, and a further increase in bandwidth yields only a marginal improvement in fade mitigation.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 519-528

Journal (Volume, Issue Number)

IET Microwaves, Antennas and Propagation (Volume 2, Issue 6)

Publication milestones

  • Published - 01/09/2008

Publication status

Published - 01/09/2008

ISSN

1751-8725

External Publication IDs

  • handle.net: 10547/269818
  • Scopus: 50249133598

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