An electronic device comprising: a plurality of antennas; a first transceiver configured to connect to each of the plurality of antennas; a second transceiver configured to connect to each of the plurality of antennas; and a baseband processor (130-1, 130-2) configured to process baseband signals, which are processed respectively by the first transceiver and the second transceiver, in one of a carrier aggregation, CA, mode and a non-CA mode; wherein the baseband processor comprises a first baseband processing module and a second baseband processing module, wherein when operating in the CA mode: a first carrier and a second carrier are received through the plurality of antennas, the first transceiver processes the first carrier, and sends the processed first carrier to the first baseband processing module, the first baseband processing module processes a first baseband signal which is processed by the first transceiver, the second transceiver processes the second carrier, and sends the processed second carrier to the second baseband processing module, the second baseband processing module processes a second baseband signal which is processed by the second transceiver, and the baseband processor aggregates the first baseband signal and the second baseband signal, and wherein when operating in the non-CA mode: the first carrier is received through the plurality of antennas, the first transceiver and the second transceiver process the received first carrier, respectively. the second baseband processing module sends a third baseband signal which is processed by the second transceiver to the first baseband processing module, and the first baseband processing module combines a fourth baseband signal which is processed by the first transceiver and the third baseband signal. a plurality of antennas; a first transceiver configured to connect to each of the plurality of antennas; a second transceiver configured to connect to each of the plurality of antennas; and a baseband processor (130-1, 130-2) configured to process baseband signals, which are processed respectively by the first transceiver and the second transceiver, in one of a carrier aggregation, CA, mode and a non-CA mode; wherein the baseband processor comprises a first baseband processing module and a second baseband processing module, wherein when operating in the CA mode: a first carrier and a second carrier are received through the plurality of antennas, the first transceiver processes the first carrier, and sends the processed first carrier to the first baseband processing module, the first baseband processing module processes a first baseband signal which is processed by the first transceiver, the second transceiver processes the second carrier, and sends the processed second carrier to the second baseband processing module, the second baseband processing module processes a second baseband signal which is processed by the second transceiver, and the baseband processor aggregates the first baseband signal and the second baseband signal, and a first carrier and a second carrier are received through the plurality of antennas, the first transceiver processes the first carrier, and sends the processed first carrier to the first baseband processing module, the first baseband processing module processes a first baseband signal which is processed by the first transceiver, the second transceiver processes the second carrier, and sends the processed second carrier to the second baseband processing module, the second baseband processing module processes a second baseband signal which is processed by the second transceiver, and the baseband processor aggregates the first baseband signal and the second baseband signal, and wherein when operating in the non-CA mode: the first carrier is received through the plurality of antennas, the first transceiver and the second transceiver process the received first carrier, respectively. the second baseband processing module sends a third baseband signal which is processed by the second transceiver to the first baseband processing module, and the first baseband processing module combines a fourth baseband signal which is processed by the first transceiver and the third baseband signal. the first carrier is received through the plurality of antennas, the first transceiver and the second transceiver process the received first carrier, respectively. the second baseband processing module sends a third baseband signal which is processed by the second transceiver to the first baseband processing module, and the first baseband processing module combines a fourth baseband signal which is processed by the first transceiver and the third baseband signal.