Keywords optical fiber communication n level phase shift keying carrier phase estimation laser phase noise equalization ... Neying (QPSK) coherent optical transmission system [25,40]. ... B. ,. (1) where ÎfTx and ÎfLO are the 3YdB linewidths of the Tx laser and the LO ..... Both the tx and the lo laser linewidths are 2 mHz.
2016 3rd International Conference on Information Science and Control Engineering