Title :
An adaptive array system for the downlink of closed-loop-mode W-CDMA system
Author :
Lim, Kyungah ; Kim, Mikyung ; Hwang, Hyungu ; Choi, Seungwon
Author_Institution :
Sch. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper presents a performance analysis of an adaptive antenna array system for the downlink of the W-CDMA mobile communication system. The power method (see Jung, Y.P. et al., Telecommunications Review, vol.8, no.4, p.677-88, 1998; Choi, S., "Design Technique of an Array Antenna, and Telecommunication System and Method Utilizing the Array Antenna", USA patent no.5,999,800, 1999) developed for the uplink system has been adopted to compute the optimal weight vector of the TxAA (transmit antenna array) diversity system as well as the downlink beamforming system. The proposed system (both TxAA and beamforming system), designed by the power method, is compared to the conventional system that employs channel estimation only. It has been observed that the proposed system outperforms the conventional system
Keywords :
adaptive antenna arrays; array signal processing; cellular radio; code division multiple access; diversity reception; feedback; transmitting antennas; 3GPP standardization; W-CDMA mobile communication system; adaptive antenna array; channel estimation; downlink beamforming system; feedback algorithm; power method; transmit diversity; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Downlink; Mobile antennas; Mobile communication; Multiaccess communication; Performance analysis; Transmitting antennas;
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.2001.957082
