Patent ID: 7099266

Claim:
An orthogonal frequency division multiplexed signal transmitting apparatus for dividing a supplied information signal into a plurality of signals, then providing a plurality of carrier signals, each carrier signal being generated as a digital-modulated carrier signal obtained by correlating predetermined digital signal values with a plurality of signal points decided on a two-dimensional plane that is defined by an in-phase axis and a quadrature axis, deciding positions, which have predetermined correspondences with positions of the plurality of signal points decided on the two-dimensional plane, as reference signal points, and then generating carrier signals, which are digital-modulated by the positions of the reference signal points at a predetermined time interval, as reference carrier signals, and receiving the generated carrier signals and the generated reference carrier signals as a time-division multiplexed signal, and then transmitting a resultant signal into a spatial transmission line, the transmitting apparatus comprising: a reference position information signal generating means for generating a reference position information signal to decide a position of the reference carrier signal to be time-division multiplexed based on an interval setting input signal being supplied; a packet signal generating means for receiving the reference position information signal and the information signal and then generating a packet signal by time-division multiplexing the received signals; an orthogonal frequency division multiplexed signal generating means for receiving the packet signal generated by the packet signal generating means and then generating an orthogonal frequency division multiplexed signal by digital-modulating the plurality of carrier signals; and a high frequency signal processing means for executing a signal process to radiate the generated orthogonal frequency division multiplexed signal into the spatial transmission line.