Patent ID: 8300714
Filing Date: 2012-10-30
Classification: H04L

Abstract:
1. A method for reducing a Peak to Average Power Ratio (PAPR) using a reserved tone set in a transmission apparatus of an Orthogonal Frequency Division Multiplexing (OFDM) communication system, the method comprising: determining a shift value based on a subcarrier spacing interval (x) and a number of spaced symbols (y) of a scattered pilot pattern; determining the reserved tone set (S determining an impulse waveform obtained by rotating a phase of a complex value of an impulse stored in a memory, using the reserved tone set; calculating a subtrahend for a PAPR of an output signal using the phase-rotated impulse waveform; and reducing a PAPR of an input signal by performing a gradient algorithm using the phase-rotated impulse waveform.