By using a generalized cost function, a modified constant modulus algorithm (CMA) that allows polarization demultiplexing and equalization of polarization-switched QPSK is found. An implementation that allows easy switching between the conventional and the modified CMA is described. Using numerical simulations, the suggested algorithm is shown to have similar performance for polarization-switched QPSK as CMA has for polarization-multiplexed QPSK.
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Opt Express
May 2013
Institut Mines-Télécom/Télécom SudParis, CNRS UMR 5157 SAMOVAR, 9 rue Charles Fourier, 91011 EVRY, France.
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