Phase entropy-based Frequency Offset Estimation for coherent optical QAM systems

We investigate a novel approach to Frequency Offset Estimation for coherent optical QAM systems, based on the received symbol phase entropy. It is highly accurate, non-data-aided and oblivious to modulation format.

[1]  M. Laddomada.  IEEE Transactions on Wireless Communications - Table of Contents , 2006 .

[2]  문정진.  § 19 , 2000 .

[3]  R. Noe,et al.  Frequency and Phase Estimation for Coherent QPSK Transmission With Unlocked DFB Lasers , 2008, IEEE Photonics Technology Letters.

[4]  Arnaud Coatanhay,et al.  Minimum entropy approach for carrier frequency recovery , 2006, IEEE Transactions on Wireless Communications.

[5]  A. Leven,et al.  Frequency Estimation in Intradyne Reception , 2007, IEEE Photonics Technology Letters.