On the Channel Capacity of Multilevel Modulation Schemes with Coherent Detection

Ivan B. Djordjevic; Lei Xu; Ting Wang

doi:10.1364/ACP.2009.ThC4

Asia Communications and Photonics Conference and Exhibition
Technical Digest (CD) (Optica Publishing Group, 2009),
paper ThC4
•https://doi.org/10.1364/ACP.2009.ThC4

On the Channel Capacity of Multilevel Modulation Schemes with Coherent Detection

Ivan B. Djordjevic, Lei Xu, and Ting Wang

Asia Communications and Photonics Conference and Exhibition 2009

Shanghai China
2–6 November 2009
ISBN: 978-1-55752-877-3

From the session
100 and 40 Gb/s Transmission Systems I (ThC)

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I. B. Djordjevic, L. Xu, and T. Wang, "On the Channel Capacity of Multilevel Modulation Schemes with Coherent Detection," in Asia Communications and Photonics Conference and Exhibition, Technical Digest (CD) (Optica Publishing Group, 2009), paper ThC4.

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Abstract

We describe a method to determine the channel capacity of an arbitrary multilevel modulation scheme by modeling the fiber-optic channel as a dynamical nonlinear intersymbol interference (ISI) channel with memory. We also propose a multilevel low-density parity-check (LDPC)-coded turbo-equalization scheme that is able closely to approach the channel capacity.

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