Patent ID: 8134911
Filing Date: 2012-03-13
Classification: H04L

Abstract:
1. A method for performing synchronization in an OFDM-based device, the method comprising: receiving an incoming OFDM-based signal with a time-domain preamble having first, second and third slots; multiplying values of the time-domain preamble with conjugates of corresponding values of a selected base station time-domain preamble to produce an output set of multiplied values having first, second and third slots; averaging the multiplied values in predefined segments of the output set to produce averaged values; self-correlating the averaged values corresponding to one of the first, second and third slots of the output set with the averaged values corresponding to another slot of the output set to derive a self-correlation value; and computing an estimated fine frequency offset with respect to the incoming OFDM-based signal using the self-correlation value.