Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
The indoor localization of mobile users is currently a central issue for
many applications and fields, including sensor networks, asset management,
healthcare, ambient-assisted living, and public safety personnel
localization. Existing solutions often rely on the fusion of information
from multiple sensors.
The potential of using an ultra wideband (UWB) system for wireless distance
measurement based on the round-trip time (RTT) has been investigated
in this thesis. Non-coherent UWB receivers have been analyzed
using two different approaches: amplitude detection and energy detection.
Both non-coherent UWB receivers front ends have been designed
and implemented. Simulations of the measurement performance are also
provided. Furthermore, a method has been proposed using undersampling
over a burst of UWB pulses to reconstruct the original pulse and
try to approximate the optimal performance of the ideal UWB receiver.
The simulations yield interesting results regarding the performance of the
RTT estimation. Both detection techniques are compared, describing the
advantages and disadvantages of each one.