A circuit includes a multiplexer, a first measurement device, and a decision device. The multiplexer is configured to receive signals from antennas, where the signals include (i) a first signal received from a first antenna of the antennas, and (ii) a second signal received from a second antenna of the antennas. The first measurement device is configured to (i) determine a first peak-to-average ratio based on the first signal, and (ii) determine a second peak-to-average ratio based on the second signal. The decision device is configured to, based on the first peak-to-average ratio and the second peak-to-average ratio, signal the multiplexer to select one of the antennas.