Method and apparatus for reducing the PAPR in the filter bank , multi-carrier systems

摘要

The present invention relates to a method for reducing the peak-to-average power ratio in a transmission device of a filter bank multi-carrier system , the method , the step ( 210 ) to perform a constellation modulation on the data to be transmitted , constellation a step of performing a K-point discrete Fourier transform to a vector of K number of constellation symbols obtained from the modulation ( 220 ) , the offset quadrature amplitude modulation on the data vectors obtained from the discrete Fourier transform and a step ( 230 ) to be executed , the parameter K represents the number of sub- carriers assigned for the transmission of data to be transmitted . When using the solution proposed in the present invention , without adding a large number of operations , it is possible to significantly reduce the PAPR of the signal , whereby the efficiency of the power amplifier circuit is increased , effective transmission power is increased , nonlinear signal distortion in power amplification phase is alleviated .