Patent ID: 8036259

Claim:
A bidirectional wireless communication apparatus for carrying out bidirectional wireless communication based on a UWB (Ultra Wide Band) communication system, comprising: a pulse sequence generator that sequentially generates a pulse sequence having pulse signals arranged based on the UWB communication system; a framing element that performs a framing process to form a frame having at least a preamble and a data portion on the pulse sequence generated from the pulse sequence generating means and inserts a preamble segment including a sequence of steady pulse signals in the data portion at a predetermined time interval; a transmitter that transmits a pulse sequence containing the frame generated by the framing element as a radio wave; a receiver that receives a pulse sequence as a radio wave transmitted from another bidirectional wireless communication apparatus; and a detector that detects at least the preamble segment from the frame contained in the pulse sequence received by the receiver through a detection window having a time length that is equal to or greater than two times a time length of the preamble segment; said transmission timing of the transmitter for the pulse sequence being controlled according to a state of detection of the preamble segment by the detector.