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TitleExcess delay estimation from time-varying mobile radio channel impulse response measurements
Publication TypeJournal Article
Year of Publication1999
AuthorsCoulson, A.J., and Kakarala R.
JournalIEEE Communications Letters
Pagination239 - 241
Date Published1999
ISSN10897798 (ISSN)
KeywordsAdditive white Gaussian noise (AWGN), Channel sounding, Communication channels (information theory), Congestion control (communication), Fading (radio), Fourier transforms, Low pass filters, Mathematical operators, Mobile radio systems, Multipath propagation, Signal to noise ratio, Spurious signal noise, Statistical methods, Telecommunication traffic, Time-varying mobile radio channels, White noise
AbstractAn image-processing approach to estimating excess delay in measured time-varying impulse response measurements of mobile radio channels was presented. This method uses bispectral averaging to estimate the mean impulse response of the measurement which is used to produce a matched filter. This is used to produce a 2D edge detector which is applied to the measurement data. The instantaneous excess delay of the channel is estimated by fitting a polynomial to the edge detector output, which was shown to be visually accurate even where the measurement data has a low peak signal-to-noise ratio.

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