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One of the most attractive features of ultra-wideband impulse radio is the collection of rich multipath with the transmission of ultra-short pulses. Exploiting the rich multipath diversity with channel estimating Rake receivers enables significant energy capture, higher performance and flexibility than suboptimal receivers. Although data-aided (DA) maximum likelihood (ML) channel estimator shows a...
This paper aims to give an empirical evaluation and analysis on ultra-wideband (UWB) channel properties, which differ quite significantly from their narrowband counterpart. Time domain measurements are performed to investigate the property of channel reciprocity, spatial correlation and body shadow effect. First of all, UWB reciprocity is observed under both baseband and radio frequency (RF) transmission,...
Wireless localization and ranging are challenging tasks which demand high signal-to-noise ratio (SNR) for an increase in accuracy. Impulsive ultra-wideband (UWB) technology is a promising signaling alternative that is capable of high-resolution ranging with minimal cost on SNR. Unfortunately, typical time-of-arrival (ToA) estimation algorithms are complicated and perform poorly in the low SNR environment...
High-resolution time-domain ultra-wideband (UWB) channel characterization with CLEAN deconvolution has become increasingly popular. However, due to the extremely wide bandwidth of the pulse, the assumption of negligible pulse distortion no longer holds. In this paper, we first summarize the current works in channel characterization with the CLEAN algorithm. We then show the a priori dependence of...
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