Patent ID: 7929595
Filing Date: 2011-04-19
Classification: H04B,H04L

Abstract:
1. A method of estimating frequency offset at a subscriber station, comprising: the subscriber station receiving a signal; the subscriber station selecting a first pair of multi-carrier symbols of the signal, each multi-carrier symbol of the first pair of multi-carrier symbols comprising at least a pilot sub-carrier; the subscriber station selecting a second pair of multi-carrier symbols of the composite signal, the second pair having at least one different symbol index than the first pair, estimating at least one phase based on a complex conjugate product between channel estimates of at least one of the first pair multi-carrier symbols and the second pair of multi-carrier symbols, wherein each of the multi-carrier symbols of the second pair of multi-carrier symbols comprising at least a pilot sub-carrier; the subscriber station providing the at least one phase to a filter of a frequency tracking loop.