Title :
Investigating the effects of imperfect DOA estimation on performance of adaptive beamforming antennas in LCR TD-CDMA
Author :
Bo, Chen ; Yongyu, Chang ; Dacheng, Yang ; Guang, Yang
Author_Institution :
Wireless Theor. & Technol. Lab. (WT&T), BUPT, Beijing
Abstract :
Adaptive beamforming antenna (ABA) is widely recognized as a primary technique which can remarkably enhance the performances of wireless networks in terms of capacity and throughput by spatial filtering. However, in practical networks, beamforming weights of ABA can be deteriorated due to direction of arrival (DOA) estimation errors. In this paper, the performances of ABA in existing DOA estimation errors scenarios are investigated from system capacity and throughput aspects. Noticeable performance degradations are observed due to the DOA estimation errors and the extent of effect on performance is presented.
Keywords :
adaptive antenna arrays; array signal processing; channel capacity; code division multiple access; direction-of-arrival estimation; radio networks; spatial filters; time division multiple access; DOA estimation; LCR TD-CDMA; adaptive beamforming antennas; direction of arrival estimation errors; spatial filtering; system capacity; wireless networks; Adaptive arrays; Antenna arrays; Antenna theory; Array signal processing; Direction of arrival estimation; Directive antennas; Estimation error; Linear antenna arrays; Throughput; Wireless networks; ABA; DOA estimation; TD-CDMA; throughput;
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.2008.4699453
