A digital signal processing demodulator with a wide frequency acquisition range

A demodulator capable of variable baud rate (f_b) operation satisfies the requirements for a forward error correcting decoder for satellite communication systems such as VSAT systems. A new method of frequency acquisition, called swept automatic frequency control has a wide f_b-independent acquisition range and prevents false locking of the carrier recovery circuit. The authors have evaluated such a demodulator and confirm that it performs satisfactorily