Integer frequency offset estimator of multi carrier receiver and a method integer frequency offset estimating thereof

摘要

The device and the method of estimation for estimating integer frequency offset is disclosed using one received OFDM symbol. Integer frequency offset estimation apparatus, a single received take each correlation value and a scattered pilot and the reference signal of the plurality of scattered pilot of the OFDM symbol plurality of correlator and in the frequency domain, the largest of the plurality of correlation values obtained from the plurality of correlators the second selector in response to the correlation values to estimate the most large correlation value among a plurality of correlation values obtained from the plurality of correlators on the basis of the first selector, and the type of the estimated scattered pilot for estimating the kind of scattered pilot in the integer frequency offset have. Thus, using a single OFDM symbol can estimate the symbol timing offset to the integer frequency offset robust and fractional frequency offset, we can estimate the kind of scattered pilot.