Title :
Rooting techniques for estimation of angular spread with an antenna array
Author :
Bengtsson, Mats ; Ottersten, Björn
Author_Institution :
R. Inst. of Technol., Stockholm, Sweden
Abstract :
When antenna arrays are used in mobile communications systems, multipath propagation effects must be taken into account. Local scattering around each signal source causes angular spreading. One important parameter for optimal transmit and receive algorithms is the width of the angular spread of each scattered source signal. We present a new principle for consistent estimation of direction of arrival as well as angular spread using standard rooting techniques such as root MUSIC, MODE or ESPRIT. The computational complexity is much lower than for previously suggested algorithms
Keywords :
antenna arrays; array signal processing; computational complexity; direction-of-arrival estimation; electromagnetic wave scattering; land mobile radio; multipath channels; radiowave propagation; DOA estimation; ESPRIT; MODE; angular spread; angular spread estimation; antenna array; array signal processing; computational complexity; direction of arrival; local scattering; mobile communications systems; multipath propagation effects; optimal receive algorithms; optimal transmit algorithms; root MUSIC; rooting techniques; scattered source signal; signal source; Antenna arrays; Antennas and propagation; Array signal processing; Direction of arrival estimation; Least squares approximation; Mobile antennas; Multidimensional signal processing; Rayleigh scattering; Receiving antennas; Signal processing algorithms;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.600512
