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

Author

Maali, Abdelmadjid ; Mesloub, Ammar ; Djeddou, Mustapha ; Mimoun, Hassane ; Baudoin, Geneviève ; Ouldali, Abdelaziz

Author_Institution

Commun. Syst. Lab., Mil. Polytech. Sch., Algiers, Algeria

Volume

13

Issue

12

fYear

2009

fDate

12/1/2009 12:00:00 AM

Firstpage

959

Lastpage

961

Abstract

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.

Keywords

Monte Carlo methods; personal area networks; radio receivers; time-of-arrival estimation; ultra wideband communication; Monte Carlo simulations; TOA; adaptive cell averaging constant false alarm rate; noncoherent IR-UWB energy detector receivers; radar systems; standard IEEE 802.15.4; time-of-arrival estimation; ultra wideband signals; Band pass filters; Detectors; Frequency; Laboratories; Propagation delay; Pulse amplifiers; Radar detection; Sampling methods; Time of arrival estimation; Ultra wideband technology; Time-of-arrival (TOA), ultra wideband (UWB), cell averaging constant false alarm rate (CA-CFAR);

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.12.091579

Filename

5353276