Wireless Communication System and Wireless Communication Receiver

A wireless communication system comprising:

• multiple wireless devices,
• wherein each of the multiple wireless devices includes
• a carrier wave generation module that generates a first carrier wave and a second carrier wave that have mutually different frequencies,
• a transmitter that has a rotational wave generation module which 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 which determines a phase shift of the received rotational wave from an output of the rotational wave demodulation module,
• wherein the multiple wireless devices have a shared frequency in advance, and
• wherein, among the multiple wireless devices, one wireless device transmits a frequency allocation request to a different wireless device at the shared frequency, and the different wireless device transmits an allocation response including a given rotational frequency to the wireless device that transmits the frequency allocation request.

A wireless communication receiver comprising:

• two reception antennas that are arranged mutually orthogonal to each other;
• a rotational wave demodulation module that, for the rotational wave that is received by the reception antenna, 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 rotational phase determination module that determines a phase shift of the received rotational wave from an output of the rotational wave demodulation module.