Baud Period Synchronization for the Slicer in a Digitally Implemented Demodulator of a PSK Modem
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
A technique is described whereby the baud period of a slicer, used in a digitally implemented demodulator of a Phase Shift Keyed (PSK) modem, is synchronized by peak tracking the x and y product. The technique allows the decoding process to be independent of frequency drifts occurring on the receive signal, so as to provide error-free decoding. Processing time is reduced since calculation of the demodulator algorithm is required to be performed only at the baud rate. Programmable resynchronization provides a significant reduction in the total number of computations required.