METHOD AND SYSTEM FOR ANTENNA CALIBRATION

The present invention discloses a method for antenna calibration, wherein, the sub-carrier frequency points of the transmitting antenna are grouped by the transmitting end, and the frequency domain calibration pilot signal of said transmitting antenna is determined according to the groups; the transmitting end obtains time domain integrated calibration pilot signal according to the frequency domain calibration pilot signal, and forms time domain transmitting signal by using the time domain integrated calibration pilot signal and transmits the signal to the receiving end; the receiving end restores the received time domain transmitting signal to the time domain integrated calibration pilot signal; the receiving end obtains frequency domain response of each group according to the time domain integrated calibration pilot signal, and obtains frequency domain responses of all sub-carrier frequency points of a calibration channel according to the frequency domain response of each group; the receiving end determines a compensation coefficient of the calibration channel according to the frequency domain response of all sub-carriers. The present invention also discloses a system for antenna calibration. With the present invention, it enables the transmission of the antenna calibration pilot signal to avoid the influence of Downlink Pilot Time Slot (DwPTS) and Uplink Pilot Time Slot (UpPTS), and the calibration precision is improved without affecting the normal communication.