Journal ArticleDOI
Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration
Reads0
Chats0
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
More filters
Posted Content
Multi-dimensional Joint Probabilistic and Geometric Shaping Strategies for Nonlinear Fiber Communications
TL;DR: It is shown that for a constellation size-constrained system, previous optimization techniques can be highly sub-optimal, and a superior optimization algorithm is proposed.
Proceedings ArticleDOI
Investigation on Probabilistic Shaping for Symbol-Level Uplink Non-orthogonal Multiple Access Visible Light Communication Systems
TL;DR: In this article, the authors investigate the performance of probabilistic shaping for uplink NOMA VLC systems and propose a constellation adaptive approach to find the optimal tradeoff between altering the constellation scale and changing the probability distribution.
Proceedings ArticleDOI
Reliability Enhancement for Multi-level Cell NAND Flash Memory Using Error Asymmetry
TL;DR: Simulation under practical MLC NAND flash error model has shown that the proposed scheme can improve remarkably output error rate and reduce read latency in these memories.
Proceedings ArticleDOI
Entropy Loading for Band-Limited Meshed-Optical-Networks: The Multicarrier Advantage
Di Che,William Shieh +1 more
TL;DR: This work reveals the linear advantage of multicarrier by the optimum power allocation and capacity-approaching modulation in meshed optical networks.
Posted Content
Tailored Shaping, Improved Detection, Simpler Backpropagation: the Road to Nonlinearity Mitigation
TL;DR: In this article, several strategies for nonlinearity mitigation based on signal processing at the transmitter and/or receiver side are analyzed and their effectiveness is discussed and improved capacity lower bounds based on their combination are presented.
References
More filters
Book
Information Theory and Reliable Communication
TL;DR: This chapter discusses Coding for Discrete Sources, Techniques for Coding and Decoding, and Source Coding with a Fidelity Criterion.
Journal ArticleDOI
Capacity Limits of Optical Fiber Networks
TL;DR: In this article, the capacity limit of fiber-optic communication systems (or fiber channels?) is estimated based on information theory and the relationship between the commonly used signal to noise ratio and the optical signal-to-noise ratio is discussed.
Journal ArticleDOI
Threshold Saturation via Spatial Coupling: Why Convolutional LDPC Ensembles Perform So Well over the BEC
TL;DR: The fundamental mechanism that explains why “convolutional-like” or “spatially coupled” codes perform so well is described, and it is conjecture that for a large range of graphical systems a similar saturation of the “dynamical” threshold occurs once individual components are coupled sufficiently strongly.
Journal ArticleDOI
Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation
TL;DR: A new coded modulation scheme is proposed that operates within less than 1.1 dB of the AWGN capacity 1/2 log2(1 + SNR) at any spectral efficiency between 1 and 5 bits/s/Hz by using only 5 modes.