Implementation of Space Modulation Technique for Indoor VLC

LI Zhuo-long; WANG Xu-dong; WU Nan; LIAO Shu-an

doi:10.13756/j.gtxyj.2018.04.017

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Implementation of Space Modulation Technique for Indoor VLC

- Implementation of Space Modulation Technique for Indoor VLC
- Study on Optical communication Issue 4, Pages: 70-73(2018)
- 作者机构：
  
  大连海事大学信息科学技术学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.04.017
  CLC： TN929.1
- Published：2018，
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[1]李卓龙,王旭东,吴楠,廖舒安.应用于室内可见光通信的空间调制技术的实现[J].光通信研究,2018(04):70-73.

LI Zhuo-long, WANG Xu-dong, WU Nan, et al. Implementation of Space Modulation Technique for Indoor VLC. [J]. (4):70-73(2018)
[1]李卓龙,王旭东,吴楠,廖舒安.应用于室内可见光通信的空间调制技术的实现[J].光通信研究,2018(04):70-73. DOI： 10.13756/j.gtxyj.2018.04.017.

LI Zhuo-long, WANG Xu-dong, WU Nan, et al. Implementation of Space Modulation Technique for Indoor VLC. [J]. (4):70-73(2018) DOI： 10.13756/j.gtxyj.2018.04.017.

摘要

为了提高可见光通信系统的数据传输率

设计并实现了两种基于空间调制技术的可见光通信方案。发送端采用空移键控（SSK）分别与脉冲位置调制（PPM）和脉冲宽度调制（PWM）相结合

形成两种复合调制方式即空间脉冲位置调制（SPPM）和空间脉冲宽度调制（SPWM）来传输数据。复合调制充分利用了空间和信号二维资源

有效地提高了系统频带利用率。接收端采用电流反馈电路和电压放大电路来提高接收电平峰值的动态范围

利用C8051对光脉冲进行解调。基于单片机实现了4发1收的实验系统

测试结果验证了方案的有效性。

Abstract

In order to improve the data transmission rate of Visible Light Communication（VLC）system

two kinds of VLC schemes based on space modulation technology are designed and implemented.The transmit end uses Space-Shift Keying（SSK）combined with Pulse Position Modulation（PPM）and Pulse Width Modulation（PWM）respectively to form two complex modulation schemes and transfer data

namely Space Pulse Position Modulation（SPPM）and Space Pulse Width Modulation（SPWM）.As the composite modulation makes full use of space and signal two-dimensional resources

the system band utilization is effectively improved.The current feedback circuit and the voltage amplifier circuit are adopted to improve the dynamic range of the peak level of the receiving level

and the optical pulse is demodulated by the single-chip computer C8051.Based on the hardware and software platform developed in this paper

a four-transmit and one-receive experimental system is obtained.The performance and effectiveness of the system are also tested and verified.

关键词

可见光通信空间调制频带利用率单片机

Keywords

VLCspatial modulationbandwidth utilizationsingle-chip computer

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