Title :
Performance evaluation of DOA based beamforming in W-CDMA system
Author :
Jeng, Shiann-Shiun ; Huang, Chia-Yuan ; Lai, Chih-Yang ; Huang, Tswen-Jiann
Author_Institution :
Dept. of Electr. Eng., Nat. DongHwa Univ., Hualien, Taiwan
fDate :
6/23/1905 12:00:00 AM
Abstract :
In wireless communications, a smart antenna system utilizes an antenna array to acquire the spatial signatures of the transmitted signals and uses the difference of the spatial signatures or the direction of arrival (DOA) of signals to correctly obtain the desired signal. This can reduce co-channel interference, mitigate the fading phenomenon caused by the multipath transmission, increase the system capacity and improve the communication quality. The purpose of this paper is to study the performance of the smart antenna DOA based beamforming algorithm applied to a wideband code division multiple access (W-CDMA) system. The simulation results show that a W-CDMA system with smart antenna, compared with that with an omnidirectional antenna, can have a lower bit error rate at the specific signal to noise ratio (SNR), allow more users to access the system at the specific bit error rate and increase the system capacity
Keywords :
adaptive antenna arrays; antenna theory; array signal processing; broadband networks; cellular radio; cochannel interference; code division multiple access; direction-of-arrival estimation; error statistics; fading channels; interference suppression; multipath channels; DOA based beamforming; W-CDMA system; bit error rate; co-channel interference; communication quality; direction of arrival; fading phenomenon; multipath transmission; smart antenna system; spatial signatures; system capacity; transmitted signals; wideband code division multiple access; wireless communications; Antenna arrays; Array signal processing; Bit error rate; Broadband antennas; Directive antennas; Interchannel interference; Multiaccess communication; Signal to noise ratio; Transmitting antennas; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.957233
