IR-UWB Detection and Fusion Strategies using Multiple Detector Types

TL;DR

This paper introduces and analyzes fusion strategies for multiple IR-UWB detectors, demonstrating a performance improvement of about 4 dB SNR through decision fusion in UWB pulse detection.

Contribution

It proposes novel fusion techniques for IR-UWB detectors and derives their performance equations, enhancing detection performance in practical scenarios.

Findings

Fusion improves detection SNR by approximately 4 dB.

Performance equations for detectors are derived considering false alarm rate and pulse shape.

Fusion of detector decisions enhances UWB signal detectability.

Abstract

Optimal detection of ultra wideband (UWB) pulses in a UWB transceiver employing multiple detector types is proposed and analyzed in this paper. We propose several fusion techniques for fusing decisions made by individual IR-UWB detectors. We assess the performance of these fusion techniques for commonly used detector types like matched filter, energy detector and amplitude detector. In order to perform this, we derive the detection performance equation for each of the detectors in terms of false alarm rate, shape of the pulse and number of UWB pulses used in the detection and apply these in the fusion algorithms. We show that the performance can be improved approximately by 4 dB in terms of signal to noise ratio (SNR) for perfect detectability of a UWB signal in a practical scenario by fusing the decisions from individual detectors.