Title :
Error analysis of DOA estimation for short code CDMA systems with a beamforming approach
Author :
Chuang, Chiao-Yao ; Yu, Xiaoli ; Kuo, C. -C Jay
Author_Institution :
Dept. of Electr. Eng., Southern California Univ., Los Angeles, CA, USA
fDate :
30 May-1 June 2005
Abstract :
A beamforming filter bank approach has recently been proposed to estimate the direction of arrival (DOA) in short code code-division multiple-access (CDMA) systems, exploiting both the signal formats at time domain and spatial signatures. The error in DOA estimation is caused by the inverse of a correlation matrix that is obtained with finite data support. To mitigate the DOA estimation error, we may increase data support and/or antenna numbers. The variance of the DOA estimation error is analysed and expressed as a function of the data support and antenna numbers in this work. Our theoretical analysis is supported by experimental data by computer simulation.
Keywords :
channel bank filters; code division multiple access; direction-of-arrival estimation; DOA estimation; beamforming filter bank approach; code code-division multiple-access; direction of arrival estimation; error analysis; short code CDMA systems; spatial signatures; Antenna arrays; Array signal processing; Delay effects; Delay estimation; Direction of arrival estimation; Error analysis; Estimation error; Filter bank; Maximum likelihood estimation; Multiaccess communication;
Conference_Titel :
Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st
Print_ISBN :
0-7803-8887-9
DOI :
10.1109/VETECS.2005.1543491
