High-Resolution Dimmable Augmented Spectral-Efficiency Discrete Multi-Tone Architecture Based on Hybrid Pulse-Width Modulation in Visible-Light Communications.

Yi Liu, Yiding Li, Xiaopeng Ji, Baolong Li

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Article in Sensors (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Low-PAPR ASE-DMT Using Constellation Extension for Optical Wireless Communications.Sensors (Basel, Switzerland) · 2025
Article

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5 · Who and what money

Authors and funding

4 authors.

Yi LiuSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.

Yiding LiSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.ORCID 0009-0005-6032-7480

Xiaopeng JiSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.ORCID 0000-0001-6094-4626

Baolong LiSchool of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.ORCID 0000-0003-2791-8156

Funding

National College Students' Platform for Innovation and Entrepreneurship 345 Training Program 202410300012ZNational Natural Science Foundation of China 62201275Youth Science and Technology Talent Promotion Project of Jiangsu Province JSTJ-2024-392

6 · The paper itself

Abstract

Dimming control is an indispensable functionality for visible-light communication (VLC) that enables both illumination and data transmission. However, how to achieve both high-resolution dimming control and spectral-efficient communication is still an open problem. Therefore, a novel high-resolution dimmable augmented spectral-efficiency discrete multi-tone (HD-ASE-DMT) architecture is proposed in this paper. To address the limitation of low dimming resolution in a conventional pulse-width modulation (PWM) scheme, a hybrid PWM mechanism was first designed by combining the inter-symbol and intra-symbol PWM signals, which provided flexible and high-resolution two-tier dimming control. Furthermore, a reconstructed process was conceived to achieve the seamless integration of the hybrid PWM and the spectral-efficient ASE-DMT architecture. As a result, the proposed HD-ASE-DMT architecture maintains full compatibility with legacy ASE-DMT receivers, thus reducing the implementation complexity compared to the existing dimmable modulation schemes. Simulation results demonstrated that a two-orders-of-magnitude improvement in the dimming resolution was achieved by the HD-ASE-DMT architecture. Moreover, the spectral efficiency of the HD-ASE-DMT architecture was improved by 29.3% compared to the conventional scheme.

Indexed as

augmented spectral-efficiency discrete multi-tone (ASE-DMT)dimming controlpulse-width modulation (PWM)visible light communication (VLC)

Identifiers

PMID40285075

DOI10.3390/s25082385

PMCPMC12030715

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