基于白光LED照明光源的室内VLC系统

臧景峰; 朴 燕; 宋正勋; 尹福昌; 康 桀

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基于白光LED照明光源的室内VLC系统

论文 | 更新时间：2020-08-12

- 基于白光LED照明光源的室内VLC系统
- Indoor Visible-light Communication System Based on White LED
- 发光学报 2009年30卷第6期页码：877-881
- 作者机构：
  
  1. 长春理工大学电子信息工程学院,吉林长春,130022
  2. 长春理工大学光电工程学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： TN911.6;TN929.12
- 纸质出版日期：2009-12-30，
  
  网络出版日期：2009-12-30，
  
  收稿日期：2009-6-17，
  
  修回日期：1900-1-2，
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臧景峰, 朴燕, 宋正勋, 等. 基于白光LED照明光源的室内VLC系统[J]. 发光学报, 2009,30(6):877-881.

ZANG Jing-feng, PIAO Yan, SONG Zheng-xun, et al. Indoor Visible-light Communication System Based on White LED[J]. Chinese Journal of Luminescence, 2009,30(6):877-881.
臧景峰, 朴燕, 宋正勋, 等. 基于白光LED照明光源的室内VLC系统[J]. 发光学报, 2009,30(6):877-881. DOI：

ZANG Jing-feng, PIAO Yan, SONG Zheng-xun, et al. Indoor Visible-light Communication System Based on White LED[J]. Chinese Journal of Luminescence, 2009,30(6):877-881. DOI：

摘要

LED照明与可见光通信技术相结合

构建出基于LED可见光无线通信系统。对室内VLC(Visible Light Communication)系统的白光LED光源特性和系统信道模型分析

提出照明光源布局设计与接收光功率分布的关系;对强度调制直接检测方式的室内VLC系统中信噪比和多径效应引起的码间串扰分析

提出采用光分集接收技术克服码间串扰和提高信噪比

并给出光检测器阵列布局的模型。建立VLC系统仿真模型

给出OOK-NRZ (On-Off Keying & Non-Return Zero)和OOK-RZ(On-Off Keying & Return Zero)调制方式的误码率和均方根时延扩展之间的关系曲线。仿真结果表明

接收光功率相同时

均方根时延扩展时间大于1.0 ns时

OOK-RZ特性优于OOK-NRZ。

Abstract

White LEDs have high power output

high efficiency and long lifetime

and are expected to serve as lighting of the next generation. Visible light LEDs are being used for indoor optical wireless communication system as well as the illumination of rooms. The visible light communication (VLC) system based on LEDs can attain high luminosity as a lighting source

and thus high quality transmission for an optical wireless system. In indoor diffuse optical wireless links multi-path dispersion limits the maximum transmission data rates. White LED light source

SNR

system channel model and RMS delay spread have been analyzed for indoor VLC system. The relation between optimal strategies of light source and received optical power was discussed. SNR of indoor VLC system based IM-DD and ISI produced by multi-path impulse response was investigated. The optical diversity reception technology was given to get rid of ISI and increase the SNR. And the model of the optical detectors layout was given. The system simulation model was built

and the relation curves between BER and RMS delay spread of OOK-NRZ modulation and OOK-RZ modulation were given. Based on the experimental results and under the same received optical power and RMS delay spread time of greater than 1.0 ns

OOK-RZ requires a wider band-width than OOK-NRZs

since it shows a better performance than OOK-NRZ.

关键词

白光LED室内可见光通信系统码间串扰均方根时延扩展分集接收技术

Keywords

white LEDindoor VLC systemISIRMS delay spreaddiversity reception technology

references

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. Komine T, Haruyama S, Nakagawa M. A study of shadowing on indoor visible-light wireless communication utilizing plural white LED lightings [J]. Wireless Personal Communi-cations, 2005, 34 (1-2):2l1-225.

. Famg Fubo, Wamg Yaohao, Song Daihu, et al. Spectroscopic analysis of white LED attenuation[J]. Chin. J. Lumin.(发光学报), 2008, 29 (2):353-357 (in Chinese).

. Guo Weiqiang, Wan Zhi, Chang Lei, et al. Noise suppression of area array CCD signal acqui-sition [J]. Chin. J. Lumin.(发光学报), 2008, 29 (1):204-208 (in Chinese).

. Ding Deqiang, Ke Xizheng, Li Jianxun. Design and simulation on the layout of lighting for VLC system [J]. Opto-Electronic Engineering (光电工程), 2007, 34 (1):131-134 (in Chinese).

. Hu Guoyong, Chen Changying, Chen Zhenqiang. Study on white LED light source for wireless indoor communications [J]. Optical Communication Technology (光通信技术), 2006, 30 (7):46-48 (in Chinese).

. Yu Zhigang, Chen Changying, Zhao Jun. The diversity reception technology in visible-light LED illumination and communi-cation system [J]. Optical Communication Technology (光通信技术), 2008, 25 (9):2-54 (in Chinese).

. Xu Guofang, Rao Haibo, Yu Xinmei, et al. Improvement of optical uniformity of white LEDs [J]. Chin. J. Lumin. (发光学报), 2008, 29 (4):707-712 (in Chinese).

. Lu Hui. Study and design on indoor wireless infrared communication . Chengdu: Southwest Jiaotong University, 2006 (in Chinese).

. Yun Wenyue. Study on modulation and demodulation method for visible-light communication system . Changchun: Changchun University of Science and Technology, 2008 (in Chinese).

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