Patent ID: 6847693

Claim:
A method of determining a sampling frequency in a multicarrier transceiver comprising the steps of: determining a decision directed carrier phase error for each of a plurality of carriers; calculating an average symbol offset in accordance with the decision directed carrier phase error, wherein the step of calculating the average symbol offset comprises forming an aggregate symbol offset in accordance with the relationship: δ e = ∑ m = 1 X ⁢ ⁢ ϕ c , e ⁢ ⁢ ( m ) 2 ⁢ ⁢ π ⁢ ⁢ m ⁢ ⁢ L , where X is the number of loaded carriers, where L is the symbol length given in samples and where Ø c,e (m)=Ø r (m)−Ø(m), where Ø c,e (m) is the decision directed carrier phase error for a carrier m, Ø r (m) is the reference phase for the carrier m, and Ø(m) is the carrier phase for the carrier m; forming a decision directed phase error relating to the average symbol offset; and adjusting the sampling frequency in response to the decision directed phase error.