Least-squares carrier frequency offset estimation for coherent optical QPSK receivers

Abstract

We investigate a carrier frequency offset (CFO) estimation algorithm for coherent optical quaternary phase-shift keying (QPSK) receivers. The algorithm utilizes the phase difference between the samples with different time-domain separations, so that the estimation accuracy can be significantly enhanced, compared with the algorithm that only compares the… (More)
DOI: 10.1109/CSNDSP.2014.6923794

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Cite this paper

@article{Li2014LeastsquaresCF, title={Least-squares carrier frequency offset estimation for coherent optical QPSK receivers}, author={Ming Li and Jian Zhao and Lian-Kuan Chen}, journal={2014 9th International Symposium on Communication Systems, Networks & Digital Sign (CSNDSP)}, year={2014}, pages={40-43} }