Investigation of Variety of Non-CoherentFront end Detectors For Timing Estimation

University essay from KTH/Signalbehandling

Author: Luis Lacasa Calvo; [2013]

Keywords: ;


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.

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