Results 21 to 30 of about 75,987 (284)

High-Security 3D-CAP Modulation Based on Triple-Decker Constellation in a 7-Core Fiber

IEEE Photonics Journal, 2022
In this paper, a high-security three-dimensional carrier-less amplitude-phase (3D-CAP) modulation is proposed, which can be used for short-distance multi-core fiber communication.
Siqi He, Bo Liu, Jianxin Ren, Rahat Ullah, Xiangyu Wu, Yaya Mao, Shuaidong Chen, Chenqi Ni, Tutao Wang, Yiming Ma, Chenfang Zhang, He Zhang, Shikui Shen, Guangquan Wang   +13 more
doaj   +1 more source

Dynamic and Flexible OFDM System Based on Joint Coded Modulation

IEEE Access, 2020
An orthogonal frequency division multiplexing (OFDM) interconnected transmission system employing joint modulation of variable-order constellation compression and probabilistic shaping is proposed in this paper.
Delin Zhao, Lei Jiang, Yaya Mao, Jianxin Ren, Xing Xu, Xiangyu Wu, Shuaidong Chen, Jingyi Zhang, Shun Han, Jianye Zhao   +9 more
doaj   +1 more source

Experimental Demonstration of Geometrically-Shaped Constellations Tailored to the Nonlinear Fibre Channel [PDF]

, 2018
A geometrically-shaped 256-QAM constellation, tailored to the nonlinear optical fibre channel, is experimentally demonstrated. The proposed constellation outperforms both uniform and AWGN-tailored 256-QAM, as it is designed to optimise the trade-off ...
Bayvel, P., Killey, R. I., Lavery, D., Semrau, D., Sillekens, E.   +4 more
core   +2 more sources

Circularly Symmetric Companding Quantization-Inspired Hybrid Constellation Shaping for APSK Modulation to Increase Power Efficiency in Gaussian-Noise-Limited Channel

IEEE Access, 2021
In this paper we address hybrid probabilistic-geometric constellation shaping (HCS) of amplitude phase shift keying (APSK) constellation based on the reversed model of optimal companding quantization for circularly symmetric sources with the goal to ...
Aleksandra Z. Jovanovic, Ivan B. Djordjevic, Zoran H. Peric, Slobodan A. Vlajkov   +3 more
doaj   +1 more source

Deep Learning of Geometric Constellation Shaping including Fiber Nonlinearities [PDF]

, 2018
A new geometric shaping method is proposed, leveraging unsupervised machine learning to optimize the constellation design. The learned constellation mitigates nonlinear effects with gains up to 0.13 bit/4D when trained with a simplified fiber channel ...
Eriksson, Tobias A., Jones, Rasmus T., Yankov, Metodi P., Zibar, Darko   +3 more
core   +2 more sources

Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]

, 2016
In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco, da Silva, Edson P., Forchhammer, Søren, Galili, Michael, Larsen, Knud J., Oxenløwe, Leif K., Yankov, Metodi P., Zibar, Darko   +7 more
core   +2 more sources

A High-Security Probabilistic Constellation Shaping Transmission Scheme Based on Recurrent Neural Networks

Photonics, 2023
In this paper, a high-security probabilistic constellation shaping transmission scheme based on recurrent neural networks (RNNs) is proposed, in which the constellation point probabilistic distribution is generated based on recurrent neural network ...
Shuyu Zhou, Bo Liu, Jianxin Ren, Yaya Mao, Xiangyu Wu, Zeqian Guo, Xu Zhu, Zhongwen Ding, Mengjie Wu, Feng Wang, Rahat Ullah, Yongfeng Wu, Lilong Zhao, Ying Li   +13 more
doaj   +1 more source

Rate Adaptive Autoencoder-based Geometric Constellation Shaping

CLEO 2023, 2023
An autoencoder is used to optimize bit-to-symbol mappings for geometric constellation shaping. The mappings allow for net rate adaptivity without additional hardware complexity, while achieving up to 300km of transmission distance compared to uniform QAM.
Jovanovic, Ognjen, Yankov, Metodi P., Da Ros, Francesco, Zibar, Darko   +3 more
openaire   +4 more sources

Rate-Adaptive Coded Modulation with Geometrically-shaped Constellations [PDF]

2018 Asia Communications and Photonics Conference (ACP), 2018
Information-theoretic metrics are used to design rate-adaptive coded modulation based on geometrically-shaped constellations with soft- and hard-decision FEC. Numerical results show that an 8% reach extension can be achieved with flexible data rates and transmission distances.
Chen, Bin, Lei, Yi, Lavery, Domanic, Okonkwo, Chigo, Alvarado, Alex   +4 more
openaire   +2 more sources

3D PCDM Probabilistic Shaping Transmission Scheme Based on Chaotic Constellation Mapping

IEEE Photonics Journal, 2023
In this article, a high-security three-dimensional (3D) probabilistic shaping optical transmission system based on prefix-free code distribution matching (PCDM) and Polar code joint coding is proposed.
Mengjie Wu, Bo Liu, Jianxin Ren, Yu Bai, Zeqian Guo, Shuyu Zhou, Yilan Ma, Gengyin Chen, Yongyi Yu, Xiangyu Wu, Yaya Mao, Feng Wang, Yongfeng Wu, Lilong Zhao   +13 more
doaj   +1 more source