Abstract
Polarization-division multiplexing (PDM) is emerging as a promising
technique for increasing data rates without increasing symbol rates.
However, the distortion effects of the fiber transmission medium poses
severe barriers for the implementation of this technological alternative.
Especially, due to the fiber-induced polarization fluctuation orthogonally
transmitted PDM signals are mixed at the receiver input. Therefore, a
receiver compensation structure needs to be implemented to recover the
original orthogonal transmitted components from their mixtures at the end of
the fiber channel. This is in fact the focus of this article where a
receiver algorithm is based on a recently proposed blind source separation
scheme exploiting magnitude boundedness of digital communication signals.
Through the use of this scheme, new receiver algorithms for recovering the
original polarization signals in an adaptive manner are proposed. The key
feature of these algorithms is that they can achieve high separation
performance while maintaining the algorithmic complexity in a fairly low
level that is suitable for implementation in optical fiber communication
receivers. The performance of these algorithms are illustrated through some
simulation examples.
© 2009 IEEE
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