Method and device for estimating the carrier frequency of a digital signal.

摘要

The present invention relates to a method of estimating the carrier frequency of a digital signal, in which method two estimates of the carrier phase are carried out in successive instants and the estimated carrier frequency is obtained from the comparison of the above two estimates. The invention concerns also a device using an estimator (22) for estimating phases of said carrier at successive instants, a circuit (24) for storing the estimates and a circuit (27) for comparing two successive estimates. In an embodiment, both the phase estimator and the comparison circuit are implemented through multipliers and adders. <IMAGE>