On probabilistic shaping of quadrature amplitude modulation for the nonlinear fiber channel
T Fehenberger, A Alvarado… - Journal of Lightwave …, 2016 - ieeexplore.ieee.org
Different aspects of probabilistic shaping for a multispan optical communication system are
studied. First, a numerical analysis of the additive white Gaussian noise (AWGN) channel …
studied. First, a numerical analysis of the additive white Gaussian noise (AWGN) channel …
Replacing the soft-decision FEC limit paradigm in the design of optical communication systems
The FEC limit paradigm is the prevalent practice for designing optical communication
systems to attain a certain bit error rate (BER) without forward error correction (FEC). This …
systems to attain a certain bit error rate (BER) without forward error correction (FEC). This …
Achievable information rates for fiber optics: Applications and computations
In this paper, achievable information rates (AIR) for fiber optical communications are
discussed. It is shown that AIRs such as the mutual information and generalized mutual …
discussed. It is shown that AIRs such as the mutual information and generalized mutual …
Introducing enumerative sphere shaping for optical communication systems with short blocklengths
Probabilistic shaping based on constant composition distribution matching (CCDM) has
received considerable attention as a way to increase the capacity of fiber optical …
received considerable attention as a way to increase the capacity of fiber optical …
Multidimensional modulation and coding in optical transport
M Karlsson, E Agrell - Journal of Lightwave Technology, 2016 - ieeexplore.ieee.org
This paper reviews the performance of optimized modulation formats in two, four, and eight
dimensions. We present performance (lower bounds) for higher dimensions by exploiting …
dimensions. We present performance (lower bounds) for higher dimensions by exploiting …
Experimental comparison of probabilistic shaping methods for unrepeated fiber transmission
This paper studies the impact of probabilistic shaping on effective signal-to-noise ratios
(SNRs) and achievable information rates (AIRs) in a back-to-back configuration and in …
(SNRs) and achievable information rates (AIRs) in a back-to-back configuration and in …
Geometrically-shaped multi-dimensional modulation formats in coherent optical transmission systems
Shaping modulation formats in multi-dimensional (MD) space is an effective approach to
harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel …
harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel …
Polarization-ring-switching for nonlinearity-tolerant geometrically shaped four-dimensional formats maximizing generalized mutual information
In this paper, a new four-dimensional 64-ary polarization ring switching (4D-64PRS)
modulation format with a spectral efficiency of 6 bit/4D-sym is introduced. The format is …
modulation format with a spectral efficiency of 6 bit/4D-sym is introduced. The format is …
Analysis and experimental demonstration of orthant-symmetric four-dimensional 7 bit/4D-sym modulation for optical fiber communication
We propose a new four-dimensional orthant-symmetric 128-ary modulation format (4D-
OS128) with a spectral efficiency of 7 bit/4D-sym. The proposed format fills the gap between …
OS128) with a spectral efficiency of 7 bit/4D-sym. The proposed format fills the gap between …
Capacity-approaching transmission over 6375 km at spectral efficiency of 8.3 bit/s/Hz
Abstract Transmission capacities of 34.9 Tb/s over 6375 km based on Gaussian-like DP-
64APSK and 33.3 Tb/s over 6800 km using DP-32QAM are demonstrated using hybrid …
64APSK and 33.3 Tb/s over 6800 km using DP-32QAM are demonstrated using hybrid …