TIE Wei-hao~1, WANG Wen-li~2, LU Can~1. Phase Compensation Algorithm Based on Maximum Likelihood Estimation and DSP Technology[J]. High voltageapparatus, 2012, 48(10): 42-46.
TIE Wei-hao~1, WANG Wen-li~2, LU Can~1. Phase Compensation Algorithm Based on Maximum Likelihood Estimation and DSP Technology[J]. High voltageapparatus, 2012, 48(10): 42-46. DOI: 10.13296/j.1001-1609.hva.2012.10.010.
To investigate the influence of nonlinearity and asynchronization of low-voltage power line channel on phase of carrier signal
a phase compensation algorithm based on maximum likelihood estimation is proposed. First the influence of synchronization on BER is analyzed
then the principle of the phase compensation algorithm and key technology are introduced.Finally
program of the phase compensation algorithm is implemented in DSP
and is tested in actual low-voltage channel.The result shows that the proposed algorithm can eliminate signal distortion caused by nonlinearity of channel in digital communication.