Title :
An adaptive array antenna with no phase calibration for cdma2000 reverse link
Author :
Chulajata, Tatcha ; Kwon, Hyuck M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wichita State Univ., KS, USA
Abstract :
In this paper, we present an inexpensive smart antenna algorithm for a 3rd generation code division multiple access (CDMA) system, e.g., cdma2000. Our algorithm can track the total input phase including the direction of arrival angle (DOA) from the desired user and fading phase at each antenna element. As a result, the channel estimation is not required. Furthermore, the phase distortion due to the radio frequency (RF) mixer in each antenna element is compensated automatically by our algorithm. Thus, the phase calibration is not necessary in our smart antenna algorithm if only the reverse link demodulation is concerned. The proposed algorithm is obtained by modifying the normalized least mean square (N-LMS) adaptive filter
Keywords :
adaptive antenna arrays; adaptive filters; array signal processing; cellular radio; code division multiple access; direction-of-arrival estimation; fading; least mean squares methods; DOA; N-LMS adaptive filter; RF mixer; adaptive array antenna; cdma2000 reverse link; code division multiple access; direction of arrival angle; fading phase; normalized least mean square adaptive filter; phase calibration; phase distortion; reverse link demodulation; total input phase; Adaptive arrays; Antenna arrays; Calibration; Channel estimation; Direction of arrival estimation; Directive antennas; Fading; Multiaccess communication; Phased arrays; Radio frequency;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.904044
