DocumentCode :
3475545
Title :
A new low complexity NLOS identification approach based on UWB energy detection
Author :
Maali, Abdelmadjid ; Mimoun, Hassane ; Baudoin, Geneviève ; Ouldali, Abdelaziz
Author_Institution :
EMP, Commun. Syst. Lab., Algiers
fYear :
2009
fDate :
18-22 Jan. 2009
Firstpage :
675
Lastpage :
678
Abstract :
The major problem of indoor localization is the presence of Non-line-of-sight (NLOS) channels. In order to perform the NLOS identification, this paper proposes a new NLOS identification approach. It is based on the energy statistics of the direct-path pulse (DPP) and on the statistics of the delay between the strongest-energy pulse and the DPP energy of the received signal folded version. The simplicity of the proposed approach lies in the use of the parameters of the Energy-Based time of arrival (TOA) Estimation (EBE) algorithm. The CM1 and CM2 channel models of the standard IEEE802.15.4a are used. Numerical simulations results show that the correct identification of channel models with the proposed approach is better than with the multipath channel statistics based approach.
Keywords :
indoor communication; multipath channels; time-of-arrival estimation; ultra wideband communication; UWB energy detection; direct-path pulse; energy-based time of arrival estimation; indoor localization; low complexity NLOS identification; multipath channel statistics; non-line-of-sight channels; Change detection algorithms; Delay; EMP radiation effects; Laboratories; Multipath channels; Numerical simulation; Signal processing; Signal resolution; Statistics; Ultra wideband technology; Time-of-arrival (TOA); non line-of-sight (NLOS) identification; ultra-wideband (UWB);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio and Wireless Symposium, 2009. RWS '09. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2698-0
Electronic_ISBN :
978-1-4244-2699-7
Type :
conf
DOI :
10.1109/RWS.2009.4957442
Filename :
4957442
Link To Document :
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