Title: Apparatus and method for calibrating channel in radio communication system using multiple antennas
Application Number: 200610148677 Application Date: 2006.09.18
Publication Number: 1980080 Publication Date: 2007.06.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B1/707;H04Q7/30;H04Q7/32;H04L25/02;H04L5/14
Applicant(s) Name: Samsung Electronics Co., Ltd. Address:
Inventor(s) Name: Hwang Gun-chul;Choi Soong-yoon;Chae Chan-byoung;Na
Attorney & Agent: luxiao zhang lixiao shu
Abstract:
    Provided is an apparatus and method for calibrating a channel in a radio communication system using multiple antennas. A base station apparatus for the radio communication system includes a channel estimator and a calculator. The channel estimator receives a UL (Uplink) sounding signal to estimate a first UL CSI (Channel State Information) and receives a UL sounding signal weighted with a DL (Downlink) CSI to estimate a second UL CSI. The calculator calculates calibration values for the respective antenna pairs using the first UL CSI and the second UL CSI. Information necessary for channel calibration is transmitted and received in an analog format. Accordingly, it is possible to minimize the waste of resource and time necessary for channel calibration.
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