A radio communication system including a first base station, a second base station, a third base station that performs a communication with the first base station and the second base station, and a user equipment that performs a communication with the first base station and the second base station, the radio communication system comprising: a determination unit configured to determine allocation of signal processing that is commonly performed by the first base station and the second base station and signal processing that is performed by the third base station, based on a predetermined reference value; a first signal processor configured to perform the signal processing allocated to the first base station in accordance with the allocation that is determined by the determination unit; a second signal processor configured to perform the signal processing allocated to the second base station in accordance with the allocation that is determined by the determination unit; and a third signal processor configured to perform the signal processing allocated to the third base station in accordance with the allocation that is determined by the determination unit, characterized in that the predetermined reference value is information indicating whether at least one of the number of antennas of the first base station and the number of antennas of the second base station is greater than or equal to the number of antennas of the user equipment, and wherein the determination unit is further configured to determine the allocation of the signal processing that is commonly performed by the first base station and the second base station and the signal processing that is performed by the third base station based on whether at least one of the number of antennas of the first base station and the number of antennas of the second base station is greater than or equal to the number of antennas of the user equipment. a determination unit configured to determine allocation of signal processing that is commonly performed by the first base station and the second base station and signal processing that is performed by the third base station, based on a predetermined reference value; a first signal processor configured to perform the signal processing allocated to the first base station in accordance with the allocation that is determined by the determination unit; a second signal processor configured to perform the signal processing allocated to the second base station in accordance with the allocation that is determined by the determination unit; and a third signal processor configured to perform the signal processing allocated to the third base station in accordance with the allocation that is determined by the determination unit, characterized in that the predetermined reference value is information indicating whether at least one of the number of antennas of the first base station and the number of antennas of the second base station is greater than or equal to the number of antennas of the user equipment, and wherein the determination unit is further configured to determine the allocation of the signal processing that is commonly performed by the first base station and the second base station and the signal processing that is performed by the third base station based on whether at least one of the number of antennas of the first base station and the number of antennas of the second base station is greater than or equal to the number of antennas of the user equipment.