Patent ID: 8767853

Claim:
An apparatus for adjusting a signal distortion component occurring when a peak to average power ratio (PAPR) decreases in a communication system of an orthogonal frequency division multiplexing (OFDM) technology or an orthogonal frequency division multiple access (OFDMA) scheme, the apparatus comprising: a signal distortion component adjusting unit to add an additional signal distortion component Pe((n+N/2) % N) to a signal distortion component e(n) that is obtained by subtracting a threshold Th value, set to decrease peak power, from an absolute value of a time domain signal x(n) of an input signal, and to thereby adjust the signal distortion component, wherein n denotes an integer from zero to a number that is obtained by subtracting ‘1’ from N that is the number of signals processed based on a symbol unit, and % denotes a modular operation.