A wireless communication system is provided that is capable of enabling more wireless devices to perform concurrent communication using a polarized wave technology. The wireless communication system is configured from carrier wave generation modules and, each of which generates a first carrier wave and a second carrier wave that have mutually different frequencies; a transmitter that has a rotational wave generation module that generates a rotational wave based on the first and second carrier waves; a rotational wave demodulation module that, for the rotational wave that is received, selectively demodulates an electric wave which has a desired rotational frequency, based on a result of multiplying a sine wave that has the same frequency as a frequency of a desired carrier wave and a sine wave that has the same frequency as the desired rotational frequency; and a receiver that has a rotational phase determination module that determines a phase shift of the received rotational wave from an output of the rotational wave demodulation module.