Exponentially-Weighted Energy Dispersion Index for the Nonlinear Interference Analysis of Finite-Blocklength Shaping
Kaiquan Wu, Gabriele Liga, Yunus Can G\"ultekin, Alex Alvarado
TL;DR
This paper introduces the exponentially-weighted energy dispersion index (EEDI), a new metric that better explains how blocklength affects effective SNR in probabilistically shaped fiber-optic systems, especially over long distances.
Contribution
The paper proposes EEDI as an improved metric over EDI for analyzing nonlinear interference in fiber-optic systems with finite blocklengths.
Findings
EEDI outperforms EDI in capturing blocklength-dependent effective SNR.
EEDI provides better insight into nonlinear interference effects in long-distance transmission.
EEDI enhances understanding of probabilistic shaping in fiber-optic communications.
Abstract
A metric called exponentially-weighted energy dispersion index (EEDI) is proposed to explain the blocklength-dependent effective signal-to-noise ratio (SNR) in probabilistically shaped fiber-optic systems. EEDI is better than energy dispersion index (EDI) at capturing the dependency of the effective SNR on the blocklength for long-distance transmission.
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Taxonomy
TopicsOptical Network Technologies · Advanced Photonic Communication Systems · Advanced Optical Network Technologies