Wireless communication apparatus and wireless communication system

A wireless communication apparatus comprising:

• an antenna element;
• a wireless receiver configured to receive a signal by the antenna element;
• and
• processor circuitry configured:
• to be connected to the wireless receiver;
• and
• to execute:
• acquiring control data for notifying a sample timing used for transmission of the signal;
• acquiring, from the reception signal received by the wireless receiver, the signal corresponding to the notified sample timing;
• separating, by using a weighting factor according to a channel state indicated at the notified sample timing, a plurality of data series included in the acquired signal;
• and
• decoding the separated plurality of data series.

A wireless communication system comprising:

• a first wireless communication apparatus;
• and
• a second wireless communication apparatus, wherein
• the first wireless communication apparatus includes:
• a first antenna element,
• a parasitic element configured to rotate around a circumference of the first antenna element,
• a wireless transmitter configured to transmit a signal from the first antenna element, and
• first processor circuitry configured:
• to be connected to the wireless transmitter;
• and
• to execute
• determining, based on a channel state, a sample timing used for transmission of the signal;
• transmitting control data for notifying the determined sample timing from the wireless transmitter;
• performing a weighting process on a plurality of data series by using a weighting factor according to the channel state indicated at the determined sample timing;
• and
• transmitting the plurality of data series that have been subjected to the weighting process from the wireless transmitter, and
• the second wireless communication apparatus includes:
• a second antenna element,
• a wireless receiver configured to receive the signal by the second antenna element, and
• second processor circuitry configured:
• to be connected to the wireless receiver;
• and
• to execute
• acquiring the control data that is transmitted from the first wireless communication apparatus;
• acquiring, from the reception signal received by the wireless receiver, the signal corresponding to the sample timing notified by the control data;
• separating, by using the weighting factor according to the channel state indicated at the notified sample timing, the plurality of data series included in the acquired signal;
• and
• decoding the separated plurality of data series.