Ultrawideband pulse correlation and distance error estimation

RA Cepeda Lopez, MA Beach, JP McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


In a given number of wireless systems, and ultrawideband (UWB) in particular, a way to communicate between transceivers is by correlating received pulses with one or several referencepulse templates. The reference template(s) aim to give a good representation of the transmitted signal. However, even for unscattered signals, resulting from line-of-sight (LOS) transmissions, radiated pulses may differ as a function of the antennas’ angle of departure/capture or may “look different” due to limited spatial resolution at the receiver. As these inaccuracies are often neglected and may have an impact on the robustness of a communication’s link, unscattered LOS UWB measurements, from 3.5 GHz to 10.5 GHz, are used in this paper to explore: (i) the effects of correlating received signals with different pulse templates as a result of distance changes between antennas (shorter than the spatial resolution of the system) and different angles of antenna radiation/capture; and (ii) the error in distance prediction from a system relaying on peak detection and limited by its spatial resolution. As a result, pulse correlation values were found to fluctuate from one and up to a value of 0.4 in some cases. Also, errors in distance estimation were characterised against different interpolation factors, from which modelling parameters are presented.
Translated title of the contributionUltrawideband pulse correlation and distance error estimation
Original languageEnglish
Title of host publicationCOST 2100, Aalborg, Denmark
Publication statusPublished - 2 Jun 2010

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