Journal ArticleDOI
Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration
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TLDR
A transmission system with adjustable data rate for single-carrier coherent optical transmission is proposed, which enables high-speed transmission close to the Shannon limit, and it is experimentally demonstrated that the optical transmission of probabilistically shaped 64-QAM signals outperforms the transmission reach of regular 16- QAM and regular 64-ZAM signals.Abstract:
A transmission system with adjustable data rate for single-carrier coherent optical transmission is proposed, which enables high-speed transmission close to the Shannon limit. The proposed system is based on probabilistically shaped 64-QAM modulation formats. Adjustable shaping is combined with a fixed-QAM modulation and a fixed forward-error correction code to realize a system with adjustable net data rate that can operate over a large reach range. At the transmitter, an adjustable distribution matcher performs the shaping. At the receiver, an inverse distribution matcher is used. Probabilistic shaping is implemented into a coherent optical transmission system for 64-QAM at 32 Gbaud to realize adjustable operation modes for net data rates ranging from 200 to 300 Gb/s. It is experimentally demonstrated that the optical transmission of probabilistically shaped 64-QAM signals outperforms the transmission reach of regular 16-QAM and regular 64-QAM signals by more than 40% in the transmission reach.read more
Citations
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Proceedings ArticleDOI
Probabilistic Shaping for Direct Detection Transmission With Kramers-Kronig Receiver
TL;DR: Simulation results show that there are 0.53/0.86/1.12dB OSNR improvements by transmitting PS-16/64/256QAM signal compared with the uniform 16/ 64/256 QAM signal.
Proceedings ArticleDOI
On the Performance of Probabilistic Shaped 16-QAM with different Entropies using Probability-aided Maximum Likelihood Sequence Detector
TL;DR: In this article , the performance of probabilistic shaped 16-ary quadrature amplitude modulation (PS-16QAM) with different entropies is investigated using the optimal probability-aided maximum likelihood sequence detector (PMLSD), which could effectively alleviate some adverse impacts of PS technology on the decision module.
Proceedings ArticleDOI
Probabilistic Shaping Methods for Linear and Nonlinear Channels
TL;DR: The main methods and achievements of probabilistic shaping are reviewed in this paper , highlighting the primary difficulties and opportunities in this area, as well as the main challenges and challenges of shaping.
Proceedings ArticleDOI
124.8-Gbit/s Net Data Rate Capacity for IM/DD Optical Intra-Data Center Interconnections By Utilizing Probabilistically Shaped PAM-8 and Digital Linear Feed-Forward Equalizers
TL;DR: In this article , the authors demonstrate 50-Gbaud probabilistically shaped PAM-8 signal transmissions based on the Maxwell-Boltzmann distribution for semiconductor optical amplifier (SOA)-based intra-data center interconnects.
Posted Content
On Kurtosis-limited Enumerative Sphere Shaping for Reach Increase in Single-span Systems
Yunus Can Gultekin,Alex Alvarado,Olga Vassilieva,Inwoong Kim,Paparao Palacharla,Chigo Okonkwo,Frans M. J. Willems +6 more
TL;DR: In this article, the effect of decreasing the kurtosis of channel inputs is investigated for the first time with an algorithmic shaping implementation, and no significant gains in decoding performance are observed for multi-span systems, while an increase in reach is obtained for single-span transmission.
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