Patent ID: 7499509

Claim:
An apparatus for compensating multicarrier signal distortion, comprising: a transmission parameter estimation unit which by using error information, distortion information and channel state information in a predetermined algorithm, calculates and outputs amplifier parameter information; and a distortion compensation unit which by processing a first bitstream, generates an estimation symbol stream, and by using the first bitstream and the estimation symbol stream, calculates and outputs the error information and the distortion information, and subtracts a compensation signal, which is calculated by using the distortion information and the amplifier parameter information, from the first bitstream, and outputs the subtraction result as an output bitstream, wherein the distortion compensation unit comprises: a demapping and pilot insertion unit which demaps the first bitstream, inserts a pilot, and outputs the estimation symbol stream; a first subtraction unit which subtracts the estimation symbol stream from the first bitstream and outputs the error information; a signal distortion calculating unit which by using the estimation symbol stream, calculates and outputs the distortion information; a compensation signal outputting unit which by using the distortion information and the amplifier parameter information, calculates and outputs the compensation signal; and a second subtraction unit, which subtracts the compensation signal from the first bitstream and outputs the output bitstream.