Algorithm for Reducing Peak to Average Power Ratio of OFDM System for VLC

YE Hui-ying; WANG Li

doi:10.13756/j.gtxyj.2017.01.020

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Algorithm for Reducing Peak to Average Power Ratio of OFDM System for VLC

- Algorithm for Reducing Peak to Average Power Ratio of OFDM System for VLC
- Study on Optical communication Issue 1, Pages: 65-68(2017)
- 作者机构：
  
  1. 郑州大学西亚斯国际学院电子信息工程学院
  2. 吉林吉大通信设计院股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2017.01.020
  CLC： TN929.1
- Published：2017，
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[1]叶会英,王莉.可见光通信OFDM系统中降低峰均功率比算法[J].光通信研究,2017(01):65-68.

YE Hui-ying, WANG Li. Algorithm for Reducing Peak to Average Power Ratio of OFDM System for VLC. [J]. (1):65-68(2017)
[1]叶会英,王莉.可见光通信OFDM系统中降低峰均功率比算法[J].光通信研究,2017(01):65-68. DOI： 10.13756/j.gtxyj.2017.01.020.

YE Hui-ying, WANG Li. Algorithm for Reducing Peak to Average Power Ratio of OFDM System for VLC. [J]. (1):65-68(2017) DOI： 10.13756/j.gtxyj.2017.01.020.

摘要

在概率类SLM（选择性映射）算法基础上

提出一种改进型算法以降低可见光通信系统的PAPR（峰均功率比）。该算法利用Logistic混沌序列作为叠加训练序列

并作为SLM算法中的随机相位序列

这样在传送边带信息时

无需传送所有的随机相位序列

只需传送混沌序列的初始值。在接收端可以根据传送的初始值恢复传送的混沌序列

从而减少边带信息的冗余

提高系统的频带利用率和误码率性能。文章给出了算法原理及仿真结果

仿真结果表明:新算法可以有效抑制可见光通信系统的PAPR

同时提高了系统信噪比。

Abstract

Based on the SLM algorithm

an improved algorithm is proposed to reduce the Peak to Average Power Ratio（PAPR）in the Visible Light Communication（VLC）system.Using improved Logistic chaotic sequence as superimposed training sequence

and the random phase sequences in this algorithm

the system doesn’t need to transfer all the random phase sequences

which only need to transfer the initial value of chaotic sequence.At the receiver side

the chaotic sequences can be recovered according to the initial value.Therefore

this algorithm can reduce the redundancy of the side band information and improve the bandwidth utilization rate and BER performance of the system.The principle of the algorithm and simulation results are given in this paper.The simulation results show that the new algorithm can effectively suppress the PAPR of the VLC system

and improve the SNR of the system.

关键词

光通信发光二极管正交频分复用峰均功率比

Keywords

optical communicationLEDOFDMPAPR

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Internet Center, Institute of Technology and Standards China Academy of Information and Communication Technology

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National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology

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