面向可见光通信的多层混合光OFDM设计方案（特邀）

李宗艳; 高寒; 许悦; 侯文彬; 李世银

doi:10.13756/j.gtxyj.2026.260014

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面向可见光通信的多层混合光OFDM设计方案（特邀）

专题：面向6G的无线光通信 | 更新时间：2026-04-20

- 面向可见光通信的多层混合光OFDM设计方案（特邀）
- Multilayer Hybrid Optical OFDM Design Scheme for Visible Light Communication
- 光通信研究 2026年第2期
- 作者机构：
  
  中国矿业大学　信息与控制工程学院，江苏　徐州　221116
- 作者简介：
  
  李宗艳，副教授。E-mail：lizongyan@cumt.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(62293483);认知无线电与信息处理教育部重点实验室基金资助项目(CRKL240202)
- DOI：10.13756/j.gtxyj.2026.260014
  中图分类号： TN929
- 收稿：2026-01-14，
  
  修回：2026-03-05，
  
  纸质出版：2026-04-10
- 稿件说明：
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李宗艳，高寒，许悦，等. 面向可见光通信的多层混合光OFDM设计方案[J]. 光通信研究，2026(2): 260014.

Li Z Y, Gao H, Xu Y, et al. Multilayer Hybrid Optical OFDM Design Scheme for Visible Light Communication[J]. Study on Optical Communications, 2026(2): 260014.
李宗艳，高寒，许悦，等. 面向可见光通信的多层混合光OFDM设计方案[J]. 光通信研究，2026(2): 260014. DOI： 10.13756/j.gtxyj.2026.260014.

Li Z Y, Gao H, Xu Y, et al. Multilayer Hybrid Optical OFDM Design Scheme for Visible Light Communication[J]. Study on Optical Communications, 2026(2): 260014. DOI： 10.13756/j.gtxyj.2026.260014.

摘要

目的

针对可见光通信（VLC）系统中分层非对称限幅光正交频分复用（LACO-OFDM）等混合光正交频分复用（OOFDM）方案因信号非正交叠加而引入限幅失真，并需依赖连续干扰消除（SIC）等迭代检测方法，导致接收端复杂度较高的问题，文章提出了一种改进的多层混合O-OFDM（MHO-OFDM）方案，以在频谱效率与接收复杂度之间实现更合理的折中。

方法

首先，该方案将正交幅度调制（QAM）符号和多层脉冲幅度调制（PAM）符号按特定规则映射至频域子载波，以实现高频谱效率；其次，在空闲子载波上引入了正值对称信号以满足非负传输约束，该信号对激活子载波不会引入干扰，并且避免了传统分层方案中对限幅噪声的迭代消除过程，接收端可实现低复杂度信号检测。

结果

仿真结果表明，文章所提MHOOFDM方案在峰均功率比（PAPR）方面整体优于现有的O-OFDM方案，同时在非线性失真的情况下，其误码率具有显著性能优势。

结论

综上，MHO-OFDM方案在提升频谱利用效率的同时有效降低了接收端复杂度，为构建高频谱效率和低复杂度的VLC系统提供了一种具有潜在应用价值的技术方案。

Abstract

Objective

The paper aims to address the limitations of hybrid Optical-Orthogonal Frequency Division Multiplexing (O-OFDM) schemes

such as Layered Asymmetric Clipped Optical Orthogonal Frequency Division Multiplexing (LACO-OFDM)

within Visible Light Communication (VLC) systems. These schemes introduce clipping distortion due to non-orthogonal signal superposition and necessitate iterative detection methods like Successive Interference Cancellation (SIC)

resulting in large receiver complexity. This paper proposes an improved Multilayer Hybrid O-OFDM (MHO-OFDM) scheme to achieve a more balanced trade-off between spectral efficiency and receiver complexity.

Methods

Firstly

this scheme maps Quadrature Amplitude Modulation (QAM) symbols and multi-level Pulse Amplitude Modulation (PAM) symbols onto frequency-domain subcarriers according to specific rules to achieve high spectral efficiency. Secondly

a positive-symmetric signal is introduced onto idle subcarriers to satisfy non-negative transmission constraints. This signal introduces no interference to active subcarriers and eliminates the iterative noise clipping process required in traditional hierarchical schemes

enabling low-complexity signal detection at the receiver side.

Results

Simulation results show that the proposed MHO-OFDM scheme exhibits overall superiority over existing O-OFDM approaches in terms of Peak-to-Average Power Ratio (PAPR)

whilst simultaneously delivering significant performance advantages in error rate under conditions of nonlinear distortion.

Conclusion

In summary

MHO-OFDM enhances spectral efficiency while effectively reducing receiver complexity

offering a technically viable solution with potential application value for constructing VLC systems characterised by high spectral efficiency and low complexity.

关键词

Keywords

references

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