METHOD AND ARRANGEMENT FOR THE DIGITAL REGULATION OF THE CARRIER PHASE IN RECEIVERS OF DATA TRANSMISSION SYSTEMS

摘要

A method for digitally regulating the carrier phase in receivers of digital data transmission systems. A comparator compares the scanned value of the demodulated input signal with the estimated value for each scanning time associated therewith provided by means of a decider to determine the deviation dk which is a measure for the phase difference between the scanned value and the estimated value. This deviation dk is filtered in a digital loop filter, including a proportional branch and an integration branch, and the regulating value is obtained from a subsequently connected accumulator. A non-linear limitation on the deviation dk is included in the integration branch of the digital loop filter.