Title :
Cramér-Rao bound for DOA estimation with antenna arrays and UWB-OFDM signals for PAN applications
Author :
Fittipaldi, Domenico A. ; Luise, Marco
Author_Institution :
Dipt. di Ing. dell´´Inf., Univ. of Pisa, Pisa
Abstract :
This paper deals with the computation of the Cramer-Rao lower bound (CRB) for direction of arrival (DOA) estimation of ultra wideband-orthogonal frequency division multiplexing (UWB-OFDM) signals detected by antenna arrays for millimetre-wave applications. The CRB on DOA estimation of UWB-OFDM sources is evaluated by extending the mathematical model of DOA estimation of narrow band signals to wideband orthogonal multicarrier signals. Specific results are presented for the case of a uniform linear array (ULA) and line-of-sight (LOS) scenario. After a comparison of our results for OFDM with the case of wideband single carrier signals, we use the CRB for DOA to substantiate the design of medium access controllers protocols that make use of DOA information.
Keywords :
OFDM modulation; direction-of-arrival estimation; millimetre wave antenna arrays; personal area networks; Cramer-Rao bound; DOA estimation; PAN applications; UWB-OFDM signals; antenna arrays; direction of arrival estimation; frequency 60 GHz; line-of-sight communication; millimetrewave applications; ultra wideband orthogonal frequency division multiplexing signals; uniform linear array; wideband orthogonal multicarrier signal; Antenna arrays; Computer vision; Direction of arrival estimation; Directive antennas; Frequency division multiplexing; Frequency estimation; Mathematical model; Narrowband; Signal detection; Ultra wideband antennas; 60 GHz; CRB on DOA estimation; OFDM;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699884
