Title :
An efficient subspace technique for joint angle and delay estimation of wireless users using circular array
Author :
El-Khamy, Said E. ; Dahab, Mohamed A Aboul ; Khiray, Sherif
Author_Institution :
Fac. of Eng., Alexandria Univ.
Abstract :
In this paper, we propose a subspace-based approach to estimate the direction of arrival (DOA) and time of arrivals (TOA) of multipath signals arriving at uniform circular array (UCA). The channel estimates from different time slots of TDMA systems have constant path DOA and TOA over the observed period. By virtue of the geometry UCA, uniform circular arrays are ideally suited to provide 360deg coverage in the azimuthal plane rather than uniform linear array. Davis transformation used to adopt channel estimate to be suitable for using MUSIC algorithm
Keywords :
antenna arrays; array signal processing; channel estimation; delay estimation; direction-of-arrival estimation; multipath channels; signal classification; time division multiple access; time-of-arrival estimation; DOA estimation; Davis transformation; MUSIC algorithm; TDMA system; TOA; UCA; azimuthal plane; channel estimation; delay estimation; direction of arrival; efficient subspace technique; joint angle; multipath signal; time of arrival; uniform circular array; wireless user; Delay estimation; Direction of arrival estimation; Iterative algorithms; Multiple signal classification; Parameter estimation; Propagation delay; Sensor arrays; Signal processing; Vectors; Wireless communication;
Conference_Titel :
Radio Science Conference, 2005. NRSC 2005. Proceedings of the Twenty-Second National
Conference_Location :
Cairo
Print_ISBN :
977-503183-4
DOI :
10.1109/NRSC.2005.193996
