A wireless communication system and a wireless communication device capable of performing communication by each transmission signal without mutual interference, when a plurality of transmission signals of different communication systems or the same communication systems exist within the same frequency band. The system includes a first wireless communication device, a second wireless communication device, a third wireless communication device, and a fixed band-pass filter and a variable band-pass filter in the third wireless communication device. The first wireless communication signal includes control information indicating a variable pass band in the variable band-pass filter, and the control information is given to the variable band-pass filter, thereby allowing the first wireless communication signal to be selectively passed through the variable band-pass filter, while removing the second wireless communication signal.