A communication device and a method of controlling the same. The communication device includes at least one receiver configured to connect to a first antenna for receiving a first signal and a second antenna for receiving a second signal; and a processor electrically coupled to the at least one receiver, wherein the processor is configured to measure received signal strengths of the first signal and the second signal based on calibration operation for the first antenna and the second antenna, select one of the first antenna and the second antenna based on the measured received signal strengths, and control the at least one receiver to receive a signal through the selected one of the first antenna and the second antenna.