RADIO ACCESS METHOD FOR REDUCED PAPR

摘要

PURPOSE: A wireless connection method for reducing a PAPR(Peak to Average Power Ratio) is provided to improve the efficiency of a power amplifier by decreasing the operating range of a power amplifier necessary for a transmitting part. CONSTITUTION: A transmitting part(1100) comprises three independent DFT modules(1106a-1106c). A first data symbol sequence is transformed with each Nu1 number of points by a first serial/parallel converter(1104a). The nu1 data symbols are spread to the frequency domain by a first DFT module. The frequency domain sequence of a Nu1 length outputted from the first DFT module is mapped to the subcarrier of the subband 1 through the symbol to subcarrier mapping module(1108). The information mapped in the subband 1 is transformed to the first time domain sequence through the Nc1- point IFFT module(1110a). The first time domain sequence is transmitted to the receiving part through the cyclic prefix process.