Patent ID: 8559565

Claim:
A method for estimating at least one offset in a subcarrier that is subject to distortion in a multicarrier communication system, the method comprising: receiving a plurality of subcarriers wherein the plurality of subcarriers contain the subcarrier that is subject to the distortion; generating a plurality of first channel estimates for a respective plurality of received subcarriers that are not subject to the distortion; processing a number of the plurality of first channel estimates for the respective plurality of received subcarriers that are not subject to the distortion to generate a second channel estimate for the subcarrier that is subject to the distortion; estimating an offset associated with the subcarrier that is subject to the distortion by: receiving a known reference signal transmitted for the subcarrier that is subject to the distortion; multiplying the second channel estimate with the known reference signal to produce a first value; and subtracting the first value from the received known reference signal to produce the estimated offset.