Wireless communication device, wireless communication system, and wireless communication method

A wireless communication system comprising a transmitter that transmits a transmitted signal in which a training signal is added to a data frame and a receiver that receives, as a received signal, the transmitted signal,

• wherein the receiver includes
• an estimation observation unit that observes a channel condition by estimating a tendency of a long delay wave and a channel fluctuation from the received signal,
• a first equalizer that compensates for the received signal,
• a second equalizer that compensates for the received signal with a property of having a higher long delay wave tolerance and a lower channel fluctuation tolerance than the first equalizer, and
• a control unit that performs control which switches such that the first equalizer or the second equalizer performs compensation for the received signal, on the basis of the channel condition observed by the estimation observation unit.

A wireless communication method comprising:

• an estimation observation step of observing a channel condition by estimating a tendency of a long delay wave and a channel fluctuation from a received signal in which a training signal is added to a data frame;
• a first compensation step of compensating for the received signal;
• a second compensation step of compensating for the received signal with a property of having a higher long delay wave tolerance and a lower channel fluctuation tolerance than the first compensation step;
• and
• a control step of switching such that compensation for the received signal is performed by the first compensation step or the second compensation step, on the basis of the channel condition observed by the estimation observation step.