Patent ID: 8542758
Filing Date: 2013-09-24
Classification: H04L

Abstract:
1. A signal generation device that performs transmission using an inverse Fourier transform, the signal generation device comprising: a modulation unit configured to modulate transmission data to obtain modulation data; a serial-parallel conversion unit configured to convert the modulation data input in series from the modulation unit to parallel data of a predetermined size smaller than the size of a dimension of a matrix used in the inverse Fourier transform; a duplication unit configured to select and duplicate all or a portion of the parallel data obtained by the serial-parallel conversion unit, to obtain duplication data; a time-axis shift unit configured to shift input duplication data along the time axis to obtain time-axis shift data; and an inverse Fourier transform unit configured to carry out the inverse Fourier transform on the parallel data obtained by the serial-parallel conversion unit and the time-axis shift data obtained by the time-axis shift unit.