Title :
Signal sub-space DOA estimation in CDMA communications with multipath propagation
Author :
Liu, Jianfeng ; Wan, Chunru
Author_Institution :
Nanyang Technol. Univ., Singapore
Abstract :
DOA estimation is a difficult task in the wireless environment involving interference and multipath propagation. In this paper, an effective estimation method is proposed with low computation and high resolution. This scheme is based on using an antenna array receiver at the base station in CDMA systems. Perfect estimation of the time delay of multipath signals is assumed. The signal sub-space method is used at the output of the parallel matched filters to estimate each resolvable direction of multipath of the desired mobile user
Keywords :
antenna arrays; array signal processing; code division multiple access; computational complexity; direction-of-arrival estimation; land mobile radio; matched filters; multipath channels; radio receivers; radiofrequency interference; receiving antennas; CDMA communications; antenna array receiver; base station; computation; interference; mobile user; multipath propagation; parallel matched filters; resolution; resolvable direction; signal sub-space DOA estimation; time delay; Antenna arrays; Antennas and propagation; Base stations; Delay effects; Delay estimation; Direction of arrival estimation; Interference; Multiaccess communication; Receiving antennas; Signal resolution;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.796722
