BER estimation of QPSK homodyne detection with carrier phase estimation using digital signal processing.

@article{Goldfarb2006BEREO,
  title={BER estimation of QPSK homodyne detection with carrier phase estimation using digital signal processing.},
  author={Gilad Goldfarb and Guifang Li},
  journal={Optics express},
  year={2006},
  volume={14 18},
  pages={8043-53}
}
An approximate analytical expression for the bit error rate of a QPSK homodyne receiver employing digital signal processing for carrier recovery is derived. BER estimated using the analytical expression is in excellent agreement with Monte-Carlo simulations. The analytical approximation leads to an intuitive understanding of the trade off in such systems and allows optimization of system parameters without resorting to Monte-Carlo simulations. 
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