Abstract
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 contribution | Ultrawideband pulse correlation and distance error estimation |
|---|---|
| Original language | English |
| Title of host publication | COST 2100, Aalborg, Denmark |
| Publisher | COST |
| Publication status | Published - 2 Jun 2010 |