Mengfan Fu
YOU?
Author Swipe
View article: Multidimensional Voronoi Constellations vs. Short Blocklength Probabilistic Shaping: A Comparison for Multilevel Coding Approach
Multidimensional Voronoi Constellations vs. Short Blocklength Probabilistic Shaping: A Comparison for Multilevel Coding Approach Open
Performance of concatenated multilevel coding with probabilistic shaping (PS) and Voronoi constellations (VCs) is analysed over AWGN channel. Numerical results show that VCs provide up to 1.3 dB SNR gains over PS-QAM with CCDM blocklength …
View article: Preamble Design for Joint Frame Synchronization, Frequency Offset Estimation, and Channel Estimation in Upstream Burst-mode Detection of Coherent PONs
Preamble Design for Joint Frame Synchronization, Frequency Offset Estimation, and Channel Estimation in Upstream Burst-mode Detection of Coherent PONs Open
Coherent optics has demonstrated significant potential as a viable solution for achieving 100 Gb/s and higher speeds in single-wavelength passive optical networks (PON). However, upstream burst-mode coherent detection is a major challenge …
View article: Distribution-in-distribution-out Regression
Distribution-in-distribution-out Regression Open
Regression analysis with probability measures as input predictors and output response has recently drawn great attention. However, it is challenging to handle multiple input probability measures due to the non-flat Riemannian geometry of t…
View article: Digital twin modeling and controlling of optical power evolution enabling autonomous-driving optical networks: a Bayesian approach
Digital twin modeling and controlling of optical power evolution enabling autonomous-driving optical networks: a Bayesian approach Open
Optical networks are evolving toward ultrawide bandwidth and autonomous operation. In this scenario, it is crucial to accurately model and control optical power evolutions (OPEs) through optical amplifiers (OAs), as they directly affect th…
View article: Building a digital twin of EDFA: a grey-box modeling approach
Building a digital twin of EDFA: a grey-box modeling approach Open
To enable intelligent and self-driving optical networks, high-accuracy physical layer models are required. The dynamic wavelength-dependent gain effects of non-constant-pump erbium-doped fiber amplifiers (EDFAs) remain a crucial problem in…
View article: Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain
Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain Open
We propose a multicarrier modulation-based digital radio-over-fibre system achieving unequal bit protection by bit and power allocation for subcarriers. A theoretical SNR gain of 16.1 dB is obtained in the AWGN channel and the simulation r…
View article: SE-Bridge: Speech Enhancement with Consistent Brownian Bridge
SE-Bridge: Speech Enhancement with Consistent Brownian Bridge Open
We propose SE-Bridge, a novel method for speech enhancement (SE). After recently applying the diffusion models to speech enhancement, we can achieve speech enhancement by solving a stochastic differential equation (SDE). Each SDE correspon…
View article: Four-dimensional direct detection with Jones space optical full-field recovery
Four-dimensional direct detection with Jones space optical full-field recovery Open
Data centers, the engines of the global Internet, are supported by massive high-speed optical interconnects. In optical fiber communication, the classic direct detection obtains only the intensity of the optical field, while the coherent d…
View article: SRTNet: Time Domain Speech Enhancement Via Stochastic Refinement
SRTNet: Time Domain Speech Enhancement Via Stochastic Refinement Open
Diffusion model, as a new generative model which is very popular in image generation and audio synthesis, is rarely used in speech enhancement. In this paper, we use the diffusion model as a module for stochastic refinement. We propose SRT…
View article: Asymmetric point-to-multipoint coherent architecture with a frequency aliasing recovery algorithm for cost-constraint short-reach access networks
Asymmetric point-to-multipoint coherent architecture with a frequency aliasing recovery algorithm for cost-constraint short-reach access networks Open
An asymmetric point-to-multipoint (PTMP) coherent architecture combined with a frequency aliasing recovery (FAR) algorithm is proposed for cost-constraint short-reach access networks. In this architecture, the uplink transmitters are simpl…
View article: Coherent digital-analog radio-over-fiber (DA-RoF) system with a CPRI-equivalent data rate beyond 1 Tb/s for fronthaul
Coherent digital-analog radio-over-fiber (DA-RoF) system with a CPRI-equivalent data rate beyond 1 Tb/s for fronthaul Open
We propose and experimentally demonstrate a coherent digital-analog radio-over-fiber (DA-RoF) system and achieve the transmission of Tb/s common public radio interface (CPRI)-equivalent data rate for fronthaul. The proposed coherent DA-RoF…
View article: Subcarrier-pairing entropy loading for digital subcarrier-multiplexing systems with colored-SNR distributions
Subcarrier-pairing entropy loading for digital subcarrier-multiplexing systems with colored-SNR distributions Open
A subcarrier-pairing entropy loading (SubP-EL) scheme with fairly low complexity is proposed for digital subcarrier-multiplexing (SCM) systems with colored signal-to-noise ratio (SNR) distributions. With the constraint of the target entrop…
View article: Frequency-offset-tolerant optical frequency comb-based coherent transmission for intra-datacenter interconnections
Frequency-offset-tolerant optical frequency comb-based coherent transmission for intra-datacenter interconnections Open
In recent years, in order to increase the capacity and scalability of intra-datacenter (DC) transmission, the optical frequency comb (OFC) source has been considered promising to replace discrete lasers, aiming to reduce the cost of wavele…
View article: Ultra-fast RSOP tracking via 3 pilot tones for short-distance coherent SCM systems
Ultra-fast RSOP tracking via 3 pilot tones for short-distance coherent SCM systems Open
We propose an algorithm to track the rotation of state of polarization (RSOP) for short-distance coherent subcarrier-multiplexing systems. 3 pilot tones are used to estimate RSOP matrices on a block-by-block basis and recover phase noise a…
View article: Low Complexity Component Nonlinear Distortions Mitigation Scheme for Probabilistically Shaped 64-QAM Signals
Low Complexity Component Nonlinear Distortions Mitigation Scheme for Probabilistically Shaped 64-QAM Signals Open
We propose a degenerated hierarchical look-up table (DH-LUT) scheme to compensate component nonlinearities. For probabilistically shaped 64-QAM signals, it achieves up to 2-dB SNR improvement, while the size of table is only 8.59% compared…
View article: Soft Failure Identification for Long-haul Optical Communication Systems Based on One-dimensional Convolutional Neural Network
Soft Failure Identification for Long-haul Optical Communication Systems Based on One-dimensional Convolutional Neural Network Open
With the advance of elastic optical networks, optical communication systems are becoming more flexible and dynamic. In this scenario, soft failures are more likely to occur due to various link impairments. If these soft failures are not ha…
View article: Degenerated look-up table–based perturbative fiber nonlinearity compensation algorithm for probabilistically shaped signals
Degenerated look-up table–based perturbative fiber nonlinearity compensation algorithm for probabilistically shaped signals Open
A degenerated look-up table–based perturbative nonlinearity compensation (DLUT-PNC) algorithm is proposed to compensate for intra-channel fiber nonlinearity. It can flexibly optimize the implementation complexity for probabilistically shap…
View article: AI-Based Modeling and Monitoring Techniques for Future Intelligent Elastic Optical Networks
AI-Based Modeling and Monitoring Techniques for Future Intelligent Elastic Optical Networks Open
With the development of 5G technology, high definition video and internet of things, the capacity demand for optical networks has been increasing dramatically. To fulfill the capacity demand, low-margin optical network is attracting attent…