RECEIVER OF ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM FOR CARRIER FREQUENCY OFFSET COMPENSATION EMPLOYING FREQUENCY DOMAIN PARALLEL INTERFERENCE CANCELLATION ALGORITHM

摘要

The present invention relates to a receiving apparatus and a compensation method for an orthogonal frequency division multiple access system for compensating the carrier frequency offset in a multi-user environment. In particular, the parallel interference cancellation of the interference component by the secondary carrier frequency offset between the user frequency domain (FDPIC: Frequency Domain Parallel Interference Cancellation) by removing an algorithm, an orthogonal frequency that can effectively compensate for the carrier frequency offset in a multi-user environment, It relates to a receiver and a compensation method for division multiple access system. ; To this end, the first to the OFDMA system, the receiving apparatus of the invention is to output a second signal which compensates for the carrier frequency offset component contained in the first signal by said each user to receive a first signal of the OFDMA scheme according to a multi-user from the outside first means and the second signal to fast Fourier transform the due to the second means, and input the third signal to generate a third signal in the frequency domain and outputting a fourth signal to remove the interference component by a respective user-specific carrier frequency offset difference and a third means. ; OFDM / FDMA, OFDMA receiver, carrier frequency offset, Frequency Domain