Title :
Automatic calibration method of adaptive array utilizing signal circulation for linear array
Author :
Nishimori, Kentaro ; Cho, Keizo ; Hori, Toshikazu
Author_Institution :
NTT Network Innovation Labs., NTT Corp., Kanagawa, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper proposes an automatic calibration method for the adaptive array based on transmitting signals for frequency division duplex (FDD) systems with a linear array (ACT-FL). This method utilizes signal circulation between antennas and calibrates transceivers, antennas, and cables between branches without requiring an additional antenna for the calibration. In order to show the effectiveness of ACT-FL, we clarify the calibration accuracy and the element spacing suitable for ACT-FL. The SIR characteristics are also evaluated using an experimental adaptive array testbed in the presence of co-channel interference (CCI)
Keywords :
adaptive antenna arrays; calibration; cellular radio; cochannel interference; linear antenna arrays; telecommunication equipment testing; ACT-FL; CCI; FDD systems; SIR characteristics; adaptive array; automatic calibration; cables; cellular systems; co-channel interference; element spacing; frequency division duplex systems; linear array; signal circulation; testbed; transceivers; Adaptive arrays; Antenna measurements; Cables; Calibration; Linear antenna arrays; Phase measurement; Phased arrays; Radiofrequency interference; Transceivers; 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.2001.956514
