Title :
CA-CFAR threshold selection for IR-UWB TOA estimation
Author :
Maali, Abdelmadjid ; Mesloub, Ammar ; Djeddou, Mustapha ; Baudoin, Geneviève ; Mimoun, Hassane ; Ouldali, Abdelaziz
Author_Institution :
Commun. Syst. Lab., EMP, Algiers, Algeria
Abstract :
In this paper, we simplify the architecture of the cell averaging constant false alarm rate (CA-CFAR) approach used in time-of-arrival (TOA) estimation for impulse radio ultra wideband (IR-UWB) systems. The CA-CFAR approach uses the received signal samples provided by the non-coherent energy detection (ED) receivers. The modified approach is evaluated by Monte Carlo simulation on the CM1 channel model of the standard IEEE802.15.4a. The effects of the reference cells number and the guard cells duration on the performances of the modified CA-CFAR approach are studied. The simulation demonstrates that the modified approach gives better results than the conventional approaches.
Keywords :
Monte Carlo methods; Zigbee; radio receivers; time-of-arrival estimation; ultra wideband communication; CA-CFAR threshold selection; CM1 channel model; IEEE802.15.4a; IR-UWB TOA estimation; Monte Carlo simulation; cell averaging constant false alarm rate; impulse radio; noncoherent energy detection receivers; received signal samples; time-of-arrival estimation; ultrawideband systems; Computer architecture; Estimation; Microprocessors; Receivers; Signal to noise ratio; Time of arrival estimation;
Conference_Titel :
Systems, Signal Processing and their Applications (WOSSPA), 2011 7th International Workshop on
Conference_Location :
Tipaza
Print_ISBN :
978-1-4577-0689-9
DOI :
10.1109/WOSSPA.2011.5931473
