| 摘要 |
Embodiments of the present invention provide a communications device, a baseband unit, and a communication method. The device includes: a baseband unit, an intermediate frequency/radio frequency (IF/RF) unit, and dual-columns cross polarization antennas, where the baseband unit is configured to: determine compensation coefficients respectively corresponding to 4 transmit channels; determine a cable compensation phase according to an uplink sounding signal received from a UE; generate 4 channels of baseband signals according to m channels of signals which are in a one-to-one correspondence with m logical ports; and correct the 4 channels of baseband signals according to the compensation coefficients respectively corresponding to the 4 transmit channels and the cable compensation phase, and send the 4 channels of corrected baseband signals to the IF/RF unit; and the IF/RF unit is configured to send the 4 channels of corrected baseband signals to the UE through the 4 transmit channels and the dual-columns cross polarization antennas. In the embodiments of the present invention, a cable compensation phase is determined according to an uplink sounding signal from a UE, and 4 channels of baseband signals are corrected according to compensation coefficients of 4 transmit channels and the cable compensation phase, so that phases of various channels of transmit signals can be controlled accurately. |
