Modified constant modulus algorithm for polarization-switched QPSK

Pontus Johannisson; Martin Sjödin; Magnus Karlsson; Henk Wymeersch; Erik Agrell; Peter A Andrekson

doi:10.1364/OE.19.007734

Modified constant modulus algorithm for polarization-switched QPSK

Opt Express. 2011 Apr 11;19(8):7734-41. doi: 10.1364/OE.19.007734.

Authors

Pontus Johannisson¹, Martin Sjödin, Magnus Karlsson, Henk Wymeersch, Erik Agrell, Peter A Andrekson

Affiliation

¹ Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.

PMID: 21503083
DOI: 10.1364/OE.19.007734

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't