Receiver, method of receiving, and computer product

In a receiver, a plurality of antennas (1a, 1 b) receive a signal, a reception signal output unit (2) selects the signal received by one or more of the antenna or a combination of the signals received by one or more of the antenna based on a condition, and a signal processing unit (3) processes the selected signals. The receiver also includes a parameter acquiring unit (5) that acquires a plurality of parameters including at least one parameter concerning the received signal, and a controlling unit (7) that determines whether to change the condition based on the parameter concerning the received signal and that changes the condition based on the determination.