Nonlinear Tomlinson-Harashima precoding for direct-detected double sideband PAM-4 transmission without dispersion compensation

Xin, Haiyun; Zhang, Kuo; Kong, Deming; Zhuge, Qunbi; Fu, Yan; Jia, Shi; Hu, Weisheng; Hu, Hao

doi:10.1364/oe.27.019156

Cited by 43 publications

(19 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To enhance the transmission performance but without any physical structure modifications to conventional IM/DD optical transmission systems, several digital signal processing (DSP)-based performance enhancement algorithms have been presented to combat the effects including CD, the equalization-induced noise enhancement and transceiver nonlinearities. These techniques include Volterra equalization [7], Tomlinson-Harashima precoding [8] and FDE-MLSE [9]. Regardless of their algorithm complexity, these techniques can support up to 84-Gb/s over 80-km [9] or 56-Gb/s over 100-km [10] optical transmissions at C-band.…”

Section: Introductionmentioning

confidence: 99%

Data-Aided Iterative Algorithms for Linearizing IM/DD Optical Transmission Systems

Zhang

Tang

et al. 2021

J. Lightwave Technol.

View full text Add to dashboard Cite

DSP-enhanced intensity-modulation direct-detection (IM/DD) systems can support up to 56 Gb/s over 100 km signal transmissions at C-band. To achieve higher data rates and longer transmission distances, we propose data-aided iterative algorithm (DIA) and decision-directed DIA (DD-DIA) to digitally mitigate signal-signal beating interference (SSBI) without requiring any modifications to physical layer structures. DIA utilizes pilot symbols with uniformly spaced insertions to relax the modified Gerchberg-Saxton (G-S) algorithms that suffer from the local optimum problem. To further improve the symbol error rate (SER) performance and convergence speed, DD-DIA introduces a decision process to generate pseudo-pilots. We numerically compare DIA with other algorithms and find that DIA can recover signals subject to large fiber dispersions corresponding to which conventional IA and Volterra filter (VF) fail, while DD-DIA significantly accelerates the convergence speed and improves the reconstruction performance compared with DIA, it can support 100-Gb/s PAM4 over 400-km IM/DD transmissions within just 50 iterations. Two orders of magnitude reductions in SER is observed for 100 Gb/s PAM4 signal transmission over 100-km SSMFs. Compared with conventional IA, the proposed techniques have higher convergence speeds, better global optimum features and large tolerances to physical model errors. In particular, DD-DIA results in larger optical signal-to-noise ratio (OSNR)/ received optical power (ROP) improvement, higher transmission capacities and less computational complexity. DD-DIA is a promising algorithm for efficiently reconstructing 2-dimensional optical field for conventional IM/DD optical transmission systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Data-Aided Iterative Algorithms for Linearizing IM/DD Optical Transmission Systems

Zhang

Tang

et al. 2021

J. Lightwave Technol.

View full text Add to dashboard Cite

show abstract

“…Actually, a PBC with a polarization extinction ratio of 30 dB or even higher is commercially available. The 500-m transmission distance in the experiment is limited by the optical fiber chromatic dispersion, which can be mitigated by using dispersion compensating fiber, VSB filtering or THP precoding at the transmitter side [35][36][37], and longer transmission distance can be achieved. Fig.…”

Section: -Gbps Otpi-pam-4 Transmission Using 33%-rz Pulsesmentioning

confidence: 99%

224-Gbps single-photodiode PAM-4 transmission with extended transmitter bandwidth based on optical time-and-polarization interleaving

Fu¹,

Kong²,

Li³

et al. 2020

Opt. Express

Self Cite

View full text Add to dashboard Cite

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

“…Meanwhile, its spectrum shows a prominent mid-frequency band. Compared with precoding using Tomlinson-Harashima precoding (THP), this algorithm consumes significantly less computation because it does not perform an estimation using previous symbols [18] .…”

Section: Introductionmentioning

confidence: 99%

Nonlinear coded nonuniform superposition QAM by trellis-coding for MISO system in visible light communication

Niu

Shi

et al. 2022

中国光学快报

View full text Add to dashboard Cite

In this paper, we propose a 36-quadrature amplitude modulation (QAM) superposition modulation technique that is featured with uneven symbol probability by nonlinear precoding, named nonlinear coded nonuniform superposition (NCNS) QAM. Its aim is to alleviate the nonlinearity effect caused by high instantaneous power in multi-input single-output (MISO) visible light communication (VLC) system, with an uneven probabilistic-shaped constellation. The transmitter includes two LEDs to send signals independently, and the receiver uses a photo detector to receive the superposed QAM signal. The experiment results show that NCNS has a better robustness against nonlinearity than pulse amplitude modulation 4, approximately gaining a 16% increase in maximum usable peak-to-peak voltage and a 33% enlargement in dynamic range area. It is a simple but effective approach to solve the bandwidth limits related to signal power and hopefully be applied in large power VLC systems such as underwater VLC, or to improve the robustness against power fluctuation.

show abstract

Nonlinear Tomlinson-Harashima precoding for direct-detected double sideband PAM-4 transmission without dispersion compensation

Cited by 43 publications

References 22 publications

Data-Aided Iterative Algorithms for Linearizing IM/DD Optical Transmission Systems

Data-Aided Iterative Algorithms for Linearizing IM/DD Optical Transmission Systems

224-Gbps single-photodiode PAM-4 transmission with extended transmitter bandwidth based on optical time-and-polarization interleaving

Nonlinear coded nonuniform superposition QAM by trellis-coding for MISO system in visible light communication

Contact Info

Product

Resources

About