Apparatus and method for minimizing peak to average power ratio in a communication system using orthogonal frequency division multiplexing scheme

The present invention is an orthogonal frequency division multiplexing: a pile in accordance with a predetermined control on the (OFDM Orthogonal Frequency Division Multiplexing) communication in the system, an information data sub-carrier signals of the sub-band signals divided, and the information data subcarrier signals by using the method and a sign bit indicating whether the sequence is inserted, said dummy sequences are inserted into the additional information subcarrier signals address bits consisting of indicating a position of the sub-band is inserted, and in accordance with a predetermined control corresponding to the position of said sub-band signal inserts said dummy sequences in the sub-band. So, initially with the additional information subcarrier signals with said dummy sequences are later created by the sub-band signals of claim 1OFDM symbol signal to input to an inverse fast Fourier transform of not inserted, and has the additional information subcarrier signals the the pile, and the sequence is generated in the 2OFDM symbol signal to the input of the inserted sub-band signal, wherein the 1OFDM symbol if the PAPR value of the signal exceeds a pre-set a PAPR threshold, the additional sign bit value and an address bit value of the information after determining the controls to be transmitted through the link is controlled to be inserted into the subbands in a position corresponding to the address bit value of the sub-band the dummy sequence, wherein the signal symbol 2OFDM down. PAPR, the sub-band division, the sign bit, address bits, dummy sequence