Fractionally spaced equalizer for indoor visible light communication system

WANG Jun-bo; XIE Xiu-xiu; CAO Ling-ling; SHENG Ming; FENG Min

doi:10.3788/OPE.20122001.0024

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Fractionally spaced equalizer for indoor visible light communication system

Article | 更新时间：2020-08-12

- Fractionally spaced equalizer for indoor visible light communication system
- Optics and Precision Engineering Vol. 20, Issue 1, Pages: 24-30(2012)
- 作者机构：
  
  南京航空航天大学电子信息工程学院,江苏南京,210016
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122001.0024
  CLC： TN929.1
- Received：23 June 2011，
  
  Revised：30 August 2011，
  
  Published Online：25 January 2012，
  
  Published：25 January 2012
- 稿件说明：
移动端阅览
王俊波, 谢秀秀, 曹玲玲, 盛明, 冯敏. 室内可见光通信中的分数间隔均衡技术[J]. 光学精密工程, 2012,20(1): 24-30

WANG Jun-bo, XIE Xiu-xiu, CAO Ling-ling, SHENG Ming, FENG Min. Fractionally spaced equalizer for indoor visible light communication system[J]. Editorial Office of Optics and Precision Engineering, 2012,20(1): 24-30
王俊波, 谢秀秀, 曹玲玲, 盛明, 冯敏. 室内可见光通信中的分数间隔均衡技术[J]. 光学精密工程, 2012,20(1): 24-30 DOI： 10.3788/OPE.20122001.0024.

WANG Jun-bo, XIE Xiu-xiu, CAO Ling-ling, SHENG Ming, FENG Min. Fractionally spaced equalizer for indoor visible light communication system[J]. Editorial Office of Optics and Precision Engineering, 2012,20(1): 24-30 DOI： 10.3788/OPE.20122001.0024.

摘要

研究了室内可见光通信系统分数间隔均衡技术

以降低码间干扰对该通信系统性能的影响。针对室内可见光通信系统的传输特点和信号调制特性

建立了室内可见光通信链路模型;在此基础上

提出了分数间隔均衡方法

并利用最小均方误差准则优化设计均衡器。最后

通过计算机仿真

对提出的分数间隔均衡方法进行了性能评估。实验结果表明

相同误码率条件下

/2分数间隔均衡器比符号间隔均衡器的性能优1~2 dB

能够更有效地抑制由信道多径效应等引起的码间干扰

提高信号传输的可靠性。

Abstract

The Fractionally Spaced Equalization (FSE) technology is investigated to mitigate the effects of Inter-symbol Interference (ISI) on the indoor Visible Light Communication (VLC) systems. Based on the propagation properties and signal modulation characteristics of indoor VLC systems

a link model for the indoor VLC communications is described

then the FSE method is proposed by using the link model. Furthermore

based on the minimum Mean Square Error (MSE) criterion

the FSE is optimized. Finally

the performance of the proposed FSE theory is evaluated by computer simulation. Experimental results indicate that the performance of

/2-fractionally spaced equalizer has improved 1-2 dB than that of the symbol interval equalizer in the same Bit Error Ratio(BER). It can eliminate the effects of the ISI induced by the multipath effectively

and can improve the reliability of signal transmission.

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references

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