ANTENNA SYSTEM, BASE STATION SYSTEM AND COMMUNICATION SYSTEM

An antenna system, a base station system and a communication system are disclosed. In the antenna system, the first antenna element array includes multiple antenna elements, and it is the same with the second antenna element array, where the antenna elements are configured to receive and transmit signals in two different polarization directions; the first combiner-splitter is configured to combine signals, where the signals are received by the multiple antenna elements in the first antenna element array; the active module is configured to receive signals combined by the first combiner-splitter in the two different polarization directions, and perform frequency translation on the signals combined by the first combiner-splitter to obtain baseband signals; the second combiner-splitter is configured to combine signals, where the signals are received by the multiple antenna elements in the second antenna element array; each second antenna apparatus corresponds to the at least one pair of receiving channels, and the at least one pair of receiving channels are configured to receive signals combined by the second combiner-splitter in the two different polarization directions; and the active module is further configured to perform frequency translation on the signals received by the at least one pair of receiving channels to obtain baseband signals. In this way, the network performance gain is improved.