Patent ID: 8184727
Filing Date: 2012-05-22
Classification: H04L

Abstract:
1. A method of receiving an Orthogonal Frequency Division Multiplexing (OFDM) transmission, the method comprising: calculating, by an OFDM receiver for each of a plurality of possible integer carrier frequency offset values, a magnitude of a sum over selected sub-carriers of the OFDM transmission of products of a first quantity and a second quantity, wherein the first quantity is a difference between estimated channel responses of a first selected sub-carriers of the OFDM transmission, and the second quantity is a complex conjugate of a difference between estimated channel responses of a second selected sub-carriers of the OFDM transmission; estimating, by the OFDM receiver, as an integer carrier frequency offset value a possible integer carrier frequency offset value that produces the largest magnitude; and using, by the OFDM receiver, the estimated integer carrier frequency offset value to receive the OFDM transmission.