Patent ID: 7652981
Filing Date: 2010-01-26
Classification: H04L

Abstract:
1. An orthogonal frequency multi-carrier transmitting apparatus which arranges plural symbols to be transmitted on the frequency axis as plural sub-carrier signal components of a frequency interval equal to the symbol rate, then converts them to time domain signals, then up converts these signals and amplifies their power, thereafter transmitting them, comprising: an inverse Fourier transform part which transforms said plural sub-carrier signal components to plural time domain signal components; a peak component detecting part which compares each of said plural time domain signals with a predetermined permissible peak level to detect peak components exceeding said permissible peak level; a Fourier transform part which transforms said peak components to frequency domain components corresponding to said sub-carrier signal components; and subtracting means which subtract said frequency domain components from said plural sub-carrier signal components to be input to said inverse Fourier transform part, thereby suppressing the peak component of the transmitting output.