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Generalized L-out-of-K Pulse Position Modulation for Improved Power Efficiency and Spectral Efficiency

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By combining multi-pulse pulse position modulation (PPM) with polarisation- switched QPSK (PS-QPSK) one can increase the spectral efficiency over simple PPM-PS- QPSK, or both the spectral efficiency and the asymptotic power efficiency over pure PS-QPSK.

© 2012 Optical Society of America

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