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Experimental Demonstration of LDPC Coded Free-Space, Space-Division-Multiplexed Systems using Orbital Angular Momentum Modes

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Abstract

The performance of LDPC coded four-mode multiplexed Orbital Angular Momentum (OAM) data link using QPSK signal with net data rate of 320Gbit/s is experimentally investigated. The experiment results show that crosstalk effect can be efficiently mitigated and the LDPC codes with soft decoding can provide >7 dB coding depending on OAM crosstalk.

© 2012 Optical Society of America

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