Multidimensional Modulation and Coding in Optical Transport [Invited]
Journal article, 2017

This paper reviews the performance of optimized modulation formats in 2, 4, and 8 dimensions. We present performance (lower bounds) for higher dimensions by exploiting known performance of binary block codes. Ultimately, the achievable information rates of given modulation formats and receiver types are limited by the mutual information and generalized mutual information. We exemplify how these metrics can be used for system performance as well as to quantify the performance differences between four types of systems; using hard or soft decision on bits or symbols.

Higher dimensions

Achievable information rate

Mutual informations

Multi-dimensional modulations

Generalized mutual information

Modulation formats

Binary block codes

Optimized modulation


Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Erik Agrell

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Journal of Lightwave Technology

0733-8724 (ISSN) 1558-2213 (eISSN)

Vol. 35 4 876-884

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology


Basic sciences

Subject Categories

Communication Systems



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