Patent ID: 7706492

Claim:
A method for correcting a symbol timing of a receiver, the receiver receiving a signal transmitted from a transmitter according to a symbol period, the method comprising: sampling the signal according to a sampling period to generate N sampled data, wherein the sampling period is half the symbol period, wherein N is a positive integer; selecting M data from the N sampled data to be a first data set according to a timing recovery algorithm (TR algorithm); calculating the first data set to generate a first timing metric according to the TR algorithm; selecting M data from the N sampled data to be a second data set according to the TR algorithm; calculating the second data set to generate a second timing metric according to the TR algorithm; changing the sign of the first timing metric; and correcting the symbol timing according to the sign changed first timing metric and the second timing metric; wherein the first data set comprises a K th data and a K th +2) data, the second data set comprising a (K th +1) data and a K th +3) data; K and M are positive integers; and M is equal to or greater than 2.