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Conferences > OFC > 2021 > F4D > F4D.4

Squeezing Out the Achievable Information Rate From Coherent QAM Systems Through Amplitude Modulation of CPE-Pilots

F. P. Guiomar, B. M. Oliveira, M. S. Neves, M. A. Fernandes, and P. P. Monteiro

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Abstract

We propose to perform amplitude modulation over DSP pilots commonly employed for carrier-phase estimation, utilizing the extra information rate to carry additional FEC overhead. For moderate pilot overheads of 3-6%, we demonstrate SNR gains in the range of 0.6-1.7 dB.

© 2021 The Author(s)

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