Title :
Adaptive antenna array with no phase calibration for CDMA reverse link
Author :
Chulajata, Tatcha ; Kwon, Hyuck M. ; Min, Kyung Y.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wichita State Univ., KS, USA
Abstract :
This paper describes an inexpensive as well as efficient adaptive antenna array processor for a code division multiple access (CDMA) wireless communications system, e.g., 3rd generation (3G) CDMA2000 or W-CDMA system. Separate channel estimation is not required in this paper while it has been used for a CDMA system with a conventional adaptive antenna array. In addition, the phase distortions due to the different radio frequency (RF) mixers can be compensated automatically in this paper. Thus, separate phase calibration is not necessary for an adaptive antenna array processor if the reverse link demodulation is concerned. Furthermore, bit error rate (BER) performance of a CDMA system with the adaptive algorithm in this paper can be smaller than that with a conventional algorithm under fading and additive white Gaussian noise (AWGN) environments
Keywords :
AWGN; adaptive antenna arrays; adaptive filters; adaptive signal processing; array signal processing; code division multiple access; demodulation; direction-of-arrival estimation; error statistics; fading channels; filtering theory; land mobile radio; least mean squares methods; mixers (circuits); multiuser channels; radio links; AWGN; BER performance; CDMA reverse link; DOA estimation; N-LMS algorithm; RF mixers; W-CDMA system; adaptive algorithm; adaptive antenna array processor; additive white Gaussian noise; bit error rate; code division multiple access; fading; modified normalised-LMS adaptive filter; normalized least mean square algorithm; phase distortions; radio frequency mixers; reverse link demodulation; third generation CDMA2000; wireless communications system; AWGN; Adaptive arrays; Antenna arrays; Bit error rate; Calibration; Channel estimation; Multiaccess communication; Phased arrays; Radio frequency; 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.2000.886643
