Receiver for a phase-shift keyed carrier signal

Details Receiver for a phase-shift keyed carrier signal Receiver for a phase-shift keyed carrier signal

H - Electricity

04

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325/80

H04L 27/22 (2006.01) H04L 27/227 (2006.01)

Patent

CA 1283707

PHN 12.144 24.05.1988 Abstract: "Receiver for a phase-shift keyed carrier signal." A receiver for a PSK-signal includes a demodulator (DEM) for obtaining demodulated data signal which after regeneration in regeneration means (HL, DR, TU) is applied to a remodulator (REM) for PKS-remodulation of the received PSK-signal to produce thereby a carrier component that is applied as an input signal to a phase-locked loop (PLL) in which a local carrier generator (VCO1) is included. The reliability of the carrier recovery for low SNR-values can be improved by implementing the regeneration means (DR, TU) also for the generation of delayed (.ANG.L) and advanced (âE) versions of the regenerated data signal (âR), and by providing the receiver in addition with means (CTU), responsive to the received PSK-signal, the local carrier and the delayed and advanced data signal versions (.ANG.L, âE), for generating a control signal (RL-RE) for a local clock generator (VCO2) connected to the regeneration means (TU, DR).

568084

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