Data aided carrier phase and symbol timing synchronizers are implemented at baseband as digital modulators isolating input signal inphase and quadrature component signals fed into inphase and quadrature Laurent transforms that function as data detector to provide odd and even data bit multiplexed output data signal while cross coupling the inphase and quadrature transformed outputs for removing data modulation in error signals to correct phase errors and timing errors in the received signal so as to provide reliable data demodulation of noisy received signals having dynamic carrier phase and symbol timing errors as found in continuous phase modulation communications systems such as Gaussian minimum shift keying communications systems.
Data Aided Digital Carrier Phase Synchronizer for Precoded CPM Signals
Data Aided Digital Carrier Phase Synchronizer for Precoded CPM Signals
Issue
Date
Patent No.
6,771,713
Category
Device or Machine
Keywords: signal processing
International Class: H04L7/02, H04L27/227, H04L27/00, H04L27/14, H04L27/16, H04L27/22