Title :
Semi-blind method for transmit antenna array in CDMA systems
Author :
Choi, Jinho ; Perreau, Sylvie ; Lee, Yong Up
Author_Institution :
Dept. of Electr. Eng., Konkuk Univ., South Korea
Abstract :
Down-link beamforming with transmit antenna array (TAA) can improve the performance of wireless communication systems. Utilizing the spatial properties of wireless channels, we propose in this paper a semi-blind downlink beamforming method for code division multiple access (CDMA) systems. Since feedback delay can cause performance degradation in a time-varying fading channel environment, channel prediction has been considered to overcome this difficulty
Keywords :
adaptive antenna arrays; array signal processing; code division multiple access; delays; direction-of-arrival estimation; fading channels; feedback; land mobile radio; multiuser channels; radio links; time-varying channels; transmitting antennas; CDMA systems; bearing estimation; channel prediction; code division multiple access; feedback delay; mobile stations; semi-blind downlink beamforming method; spatial properties; time-varying fading channel; transmit antenna array; wireless channels; wireless communication systems; Antenna arrays; Array signal processing; Degradation; Delay systems; Downlink; Fading; Feedback; Multiaccess communication; Transmitting antennas; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886652
