Bandwidth-dependent modelling of small-scale fade depth in wireless channels
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.Citation
Malik, W.Q,; Allen, B.; Edwards, D.J (2008) Bandwidth-dependent modelling of small-scale fade depth in wireless channels 2008, 2 (6):519-528 IET Microwaves, Antennas & PropagationPublisher
IETType
ArticleLanguage
enISSN
17518725ae974a485f413a2113503eed53cd6c53
10.1049/iet-map:20080015