A Time-based Hybrid Modulation Carrier-less Amplitude Phase Visible Light Communication System

SHI Meng; CHI Nan

doi:10.13756/j.gtxyj.2018.05.002

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A Time-based Hybrid Modulation Carrier-less Amplitude Phase Visible Light Communication System

- A Time-based Hybrid Modulation Carrier-less Amplitude Phase Visible Light Communication System
- Study on Optical communication Issue 5, Pages: 8-13(2018)
- 作者机构：
  
  复旦大学通信科学与工程系电磁波信息科学教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.05.002
  CLC： TN929.1
- Published：2018，
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[1]石蒙,迟楠.时间混合调制无载波幅度相位可见光通信系统[J].光通信研究,2018(05):8-13.

SHI Meng, CHI Nan. A Time-based Hybrid Modulation Carrier-less Amplitude Phase Visible Light Communication System. [J]. (5):8-13(2018)
[1]石蒙,迟楠.时间混合调制无载波幅度相位可见光通信系统[J].光通信研究,2018(05):8-13. DOI： 10.13756/j.gtxyj.2018.05.002.

SHI Meng, CHI Nan. A Time-based Hybrid Modulation Carrier-less Amplitude Phase Visible Light Communication System. [J]. (5):8-13(2018) DOI： 10.13756/j.gtxyj.2018.05.002.

摘要

许多研究人员已经将基于发光二极管的可见光通信（VLC）与照明通信相结合

然而VLC系统的性能主要受限于系统带宽和信噪比（SNR）

之前的实验并没有充分利用信道资源

特别是SNR资源。针对SNR资源利用问题

文章提出了一种基于时间的混合调制无载波幅度相位VLC系统

在该系统中

信号的实际调制级别不仅可以是一个整数

而且可以是一个十进制数

通过按一定的比例对比特进行分组

可以提高信道的SNR资源利用率。通过仿真和实验验证了该系统的可行性和有效性。实验结果表明

当驱动信号的峰峰值电压范围为0.65～0.86V时

可以获得约10%的比特率改善。

Abstract

Light Emitting Diode（LED）-based Visible Light Communication（VLC）

combining with communication with illumination

has been attracted much attention recently.The performance of VLC system is mainly subjected to the limited system bandwidth and Signal-to-Noise Ratio（SNR）.However

the previous studies do not make full use of channel resources

especially the SNR resources.In this paper

for the issue of utilization of SNR resource

a time-based hybrid modulation carrierless amplitude phase（CAP）VLC system is proposed.In this system

the real modulation level of the signal can both be an integer a decimal number

which increases utilization of the SNR resources of the channel by grouping bits by a certain ratio.The feasibility and effectiveness of this system are verified through both simulation and experiment.The bit rate can be improved by～10% when peak-to-peak voltage of driving signal ranges from 0.65 Vto 0.86 Vin experimental demonstration.

关键词

可见光通信无载波幅度相位调制混合调制发光二极管

Keywords

VLCCAP modulationhybrid modulationLED

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