WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION SYSTEM

1 . A wireless communication apparatus comprising:

an antenna element;

a parasitic element configured to rotate around a circumference of the antenna element;

a wireless transmitter configured to transmit a signal from the antenna element; and

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.

2 . The wireless communication apparatus according to claim 1 , wherein

the determining includes:

measuring the channel state by using a received reference signal, and

determining the sample timing based on the measured channel state.

3 . The wireless communication apparatus according to claim 1 , wherein

the determining includes:

receiving report information for reporting a measurement result of the channel state, and

determining the sample timing based on the reported channel state.

4 . 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.

5 . 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.