Patent ID: 8406320
Filing Date: 2013-03-26
Classification: H04L

Abstract:
1. A digital clipping method for clipping an Orthogonal Frequency Division Multiplexing (OFDM) transmission signal, the method comprising: a) dividing the transmission signal into real and imaginary parts; b) dividing magnitudes of the real and imaginary part signals into a plurality of clipping sections that have different clipping levels; and c) clipping the real and imaginary parts of the transmission signal by comparing each of the real and imaginary parts with each of the plurality of clipping levels of the clipping sections while allowing a phase error, wherein two comparators are used to compare the real and imaginary parts with three clipping levels A, L1, and L2 when the three clipping levels are provided as the plurality of clipping levels, and wherein the clipped real part y wherein the transmission signal x(n) is expressed by a real part x