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Registered APPARATUS AND METHOD FOR CALIBRATION IN COMMUNICATION SYSTEM

직교주파수분할다중화 시스템의 기지국 스마트 안테나 무선 송신장치의 캘리브레이션 방법 및 장치
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Inventors
Yong Su Lee, Bang Young Jo, 박윤옥, Jung Jae Gun, Sohn Kyung Yeol
Application No.
11635475 (2006.12.07)
Publication No.
20070147537 (2007.06.28)
Registration No.
7940858 (2011.05.10)
Country
UNITED STATES
Abstract
In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.
KSP Keywords
Communication system, Frequency signal, Intermediate frequency, RF signal, Radio Frequency(RF), Radio frequency (rf), Reference signal, Up-converter, down-converter
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Status Patent Country KIPRIS
Registered 직교 주파수 분할 다중화 시스템에서 기지국 스마트 안테나 무선 송신 장치의 캘리브레이션 장치 및 방법 KOREA