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1 Joint Scale-Lag Diversity in Mobile Ultra-Wideband Systems
BibTeX
@MISC{Margetts_1joint,
author = {Adam R. Margetts and Philip Schniter},
title = {1 Joint Scale-Lag Diversity in Mobile Ultra-Wideband Systems},
year = {}
}
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Abstract
Abstract — In this paper, we consider the effect of mobility on an ultra-wideband (UWB) direct sequence spread spectrum communication system. Based on a uniform ring of scatterers model, we determine that the wideband scattering function has a “bathtub-shaped ” scale spectrum. We compare the the performances of a scale-lag Rake and a frequency-lag Rake, each capable of leveraging the diversity that results from mobility. The scale-lag Rake receiver, whose scale- and lag-shifted basis functions are matched to the dilation-delay dynamics of the wideband channel, exploits greater diversity. Finally, we suggest a low-complexity implementation of the scale-lag Rake receiver. I.
Keyphrases
joint scale-lag diversity mobile ultra-wideband system scale-lag rake receiver sequence spread spectrum communication system scale-lag rake dilation-delay dynamic frequency-lag rake low-complexity implementation lag-shifted basis function bathtub-shaped scale spectrum wideband channel uniform ring scatterers model
