Patent ID: 7583740

Claim:
An apparatus for compensating a sampling clock offset of a sampling clock in a multi-carrier communication system, the sampling clock being used for sampling a plurality of received symbols, the apparatus comprising: a compensating circuit compensating a first and a second received symbols according to a compensating signal and thereby generating a first and a second compensated symbols, wherein the first and the second received symbols are corresponding to a first and a second sub-carriers, respectively; a data removal circuit, coupled to the compensating circuit, removing a first predetermined transmitted data from the first compensated symbol of the first sub-carrier, and a second predetermined transmitted data from the second compensated symbol of the second sub-carrier and thereby generating a first and a second data removal symbols, respectively; and a computing circuit, coupled to the data removal circuit, calculating the sampling clock offset according to the first and the second data removal symbols, generating a sampling clock signal according to the sampling clock offset, and providing the compensating signal for the compensating circuit according to the sampling clock offset.