Results 21 to 30 of about 85,197 (284)
Transmission method of improved fiber nonlinearity tolerance for probabilistic amplitude shaping.
Optics Express, 2020 For probabilistic amplitude shaping (PAS), we propose a super-symbol transmission method that improves fiber nonlinearity tolerance. A simple fiber nonlinearity low-pass filtering model, as well as its interaction with the spectral dip of signal's ...
W. Peng +4 more
semanticscholar +3 more sources
Performance comparison of probabilistic amplitude shaping and multidimensional modulation
IEICE Communications Express, 2020 : We numerically evaluate Achievable Information Rate (AIR) and Bit Error Rate (BER) performances of Probabilistic Amplitude Shaping (PAS), eight-dimensional modulation with Bit-Interleaved Coded Modulation Iterative Detection (BICM-ID), and conventional
A. Naka
semanticscholar +3 more sources
Perturbation-based Sequence Selection for Probabilistic Amplitude Shaping
arXiv.orgWe introduce a practical sign-dependent sequence selection metric for probabilistic amplitude shaping and propose a simple method to predict the gains in signal-to-noise ratio (SNR) for sequence selection. The proposed metric provides a $0.5$ dB SNR gain
Mohammad Taha Askari, Lutz Lampe
semanticscholar +3 more sources
Optics Express, 2020 In this paper, the polar coded probabilistic amplitude shaping (PC-PAS) is investigated in a free space optical (FSO) communication system to combat the fading induced by turbulence.
Jiafei Fang +7 more
semanticscholar +3 more sources
Approaching waterfilling capacity of parallel channels by higher order modulation and probabilistic amplitude shaping [PDF]
2018 52nd Annual Conference on Information Sciences and Systems (CISS), 2018 Parallel, additive white Gaussian noise (AWGN) channels with an average sum power constraint are considered. It is shown how the waterfilling Shannon capacity can be approached by higher order modulation and probabilistic amplitude shaping (PAS). This is
Fabian Steiner +2 more
semanticscholar +4 more sources
Probabilistic shaping for ROF system with heterodyne coherent detection
APL Photonics, 2017 We investigate and compare the performance of normal and probabilistic shaping (PS) 16-ary quadrature amplitude modulation (16QAM) in a photonic vector millimeter-wave (mm-wave) signal generation system adopting
Bo Liu +4 more
doaj +2 more sources
Sensitivity Gains by Mismatched Probabilistic Shaping for Optical Communication Systems [PDF]
, 2015 Probabilistic shaping of quadrature amplitude modulation (QAM) is used to enhance the sensitivity of an optical communication system. Sensitivity gains of 0.43 dB and 0.8 dB are demonstrated in back-to-back experiments by shaping of 16QAM and 64QAM ...
Alvarado, Alex +5 more
core +12 more sources
Probabilistically Shaped PAM-8 Transmission With Simplified Volterra Equalizer
IEEE Photonics Journal, 2022 Intensity-modulation direct-detection (IM/DD) probabilistically shaped (PS) 8-level pulse-amplitude modulation (PAM) signal is promising for high-speed intra-data-center networks.
Mingyi Gao +3 more
doaj +1 more source
Joint Shaping of Geometry and Probability based on Mutual Information Neural Estimation
Guangtongxin yanjiu, 2022 In view of the problem that quadrature amplitude modulation has 1.53 dB capacity gap at the Shannon limit in high signal noise ratio, the paper proposes a joint shaping method of geometry and probability based on mutual information neural estimation ...
Jia-xi LIANG +3 more
doaj +3 more sources
IEEE Access, 2023 A novel concept for single wavelength high spectral-efficient multi-dimensional optical transmission with geometric and probabilistic constellation shaping and bit mapping technique is presented in this study.
Jinwoo Park +3 more
doaj +1 more source