| 摘要 |
The present invention discloses a method and device for self-calibrating an antenna in a base station of a CoMP-based TDD system, where firstly the relative reciprocity w i of each pair of base station transmitter and receiver of the present base station relative to a calibration transmitter and receiver is calculated, and the relative reciprocity w i of each pair of base station transmitter and receiver of the present base station relative to a reference base station transmitter and receiver is calcuated by selecting one pair of base station transmitter and receiver as the reference base station transmitter and receiver, wherein i=1, 2, ..., N; then a measurement signal is transmitted from the calibration transmitter of the present base station to the calibration receiver, and a channel response h c,k of the calibration transmitter and receiver of the present base station is measured, wherein h c,k = h ct,k h cr,k , and k=1, 2, ..., M; then a channel response h cr,k of the calibration receiver of the present base station is measured; next the absolute reciprocity w c,k of the calibration transmitter and receiver of the present base station is calculated in the formula of w c , k = h c , k h cr , k 2 ; and finally a global relative calibration weight w i of each pair of base station transmitter and receiver of the present base station from an acquired global reference W m is calculated in the formula of w ^ i = w €¾ i �¢ w t w m . The technical solution of the invention can perform antenna calibration of a CoMP-based TDD radio communication system. |
