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Modulator Nonlinearity Compensation by Joint Companding/Predistortion for COOFDM

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Abstract

We show that joint digital companding/predistortion for modulator nonlinearity mitigation improves OSNR headroom of coherent optical OFDM systems by up to 2.2 dB (4.4 dB) compared to conventional (no) predistortion.

© 2014 Optical Society of America

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