Adaptive CA-CFAR threshold for non-coherent IR-UWB energy detector receivers

In the present letter, a new adaptive threshold comparison approach for time-of-arrival (TOA) estimation in ultra wideband (UWB) signals is proposed. This approach can be used with non-coherent energy detector receivers in UWB systems. It exploits the idea of cell averaging constant false alarm rate...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	IEEE communications letters 2009-12, Vol.13 (12), p.959-961
Hauptverfasser:	Maali, A., Mesloub, A., Djeddou, M., Mimoun, H., Baudoin, G., Ouldali, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Band pass filters cell averaging constant false alarm rate (CA-CFAR) Computer Science Computer simulation Detection, estimation, filtering, equalization, prediction Detectors Energy use Exact sciences and technology Frequency Information, signal and communications theory Laboratories Monte Carlo methods Networking and Internet Architecture Propagation delay Pulse amplifiers Radar detection Radiocommunications Radiolocalization and radionavigation Receivers Sampling methods Signal and communications theory Signal, noise Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Thresholds Time of arrival estimation Time-of-arrival (TOA) Transmission and modulation (techniques and equipments) Transmitters. Receivers ultra wideband (UWB) Ultra wideband technology Ultrawideband Wideband
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	In the present letter, a new adaptive threshold comparison approach for time-of-arrival (TOA) estimation in ultra wideband (UWB) signals is proposed. This approach can be used with non-coherent energy detector receivers in UWB systems. It exploits the idea of cell averaging constant false alarm rate (CA-CFAR) used in radar systems, where the threshold changes every energy block. The performance of several approaches are compared via Monte Carlo simulations using the CM1 channel model of the standard IEEE 802.15.4a. Both simulation results and comparisons are provided highlighting the effectiveness of the proposed approach.
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2009.12.091579