可见光通信自适应O-OFDM符号分解串行传输系统设计与研究

doi:10.11959/j.issn.1000-436x.2020179

通信学报 ›› 2020, Vol. 41 ›› Issue (9): 179-189.doi: 10.11959/j.issn.1000-436x.2020179

可见光通信自适应O-OFDM符号分解串行传输系统设计与研究

贾科军¹,杨博然¹,曹明华¹,黎锁平²,郝莉³

¹ 兰州理工大学计算机与通信学院，甘肃兰州 730050
² 兰州理工大学理学院，甘肃兰州 730050
³ 西南交通大学信息科学与技术学院，四川成都 610031

修回日期:2020-08-05 出版日期:2020-09-25 发布日期:2020-10-12
作者简介:贾科军（1978- ），男，陕西兴平人，博士，兰州理工大学教授、硕士生导师，主要研究方向为多载波调制、可见光通信技术|杨博然（1996- ），男，吉林长春人，兰州理工大学硕士生，主要研究方向为可见光通信LED非线性抑制技术|曹明华（1979- ），男，甘肃平凉人，博士，兰州理工大学副教授、硕士生导师，主要研究方向为微波光子学与无线光通信技术|黎锁平（1965- ），男，甘肃合水人，博士，兰州理工大学教授、博士生导师，主要研究方向为随机系统的优化与控制、无线通信业务流与数据通信协议分析设计|郝莉（1971- ），女，四川成都人，博士，西南交通大学教授、博士生导师，主要研究方向为无线通信理论与关键技术
基金资助:
国家自然科学基金资助项目(61461026);甘肃省自然科学基金资助项目(18JR3RA153)

Design and research of adaptive O-OFDM symbol decomposing with serial transmission system in visible light communication

Kejun JIA¹,Boran YANG¹,Minghua CAO¹,Suoping LI²,Li HAO³

¹ School of Computer and Communication,Lanzhou University of Technology,Lanzhou 730050,China
² School of Science,Lanzhou University of Technology,Lanzhou 730050,China
³ School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China

Revised:2020-08-05 Online:2020-09-25 Published:2020-10-12
Supported by:
The National Natural Science Foundation of China(61461026);The Natural Science Foundation of Gansu Province(18JR3RA153)

摘要/Abstract

摘要：

迭代信号限幅（ISC）和符号分解串行传输（SDST）技术将光正交频分复用（O-OFDM）符号分解为固定数量的多个小幅度符号，但当 O-OFDM 符号方差较小时，分解符号中有大量不载荷信息的全零符号，导致误码率变差、光功率损耗和信息速率降低。针对这一问题，提出了自适应 O-OFDM 符号分解串行传输（ASDST）系统，根据O-OFDM符号的幅度大小自适应决定符号分解，直到O-OFDM符号完全分解或达到最大符号分解次数，从而消除了全零符号，减少了平均符号分解次数。理论分析和蒙特卡罗仿真验证了ASDST系统的性能。

关键词: 可见光通信, 光正交频分复用, 符号分解串行传输, 自适应技术

Abstract:

Iterative signal clipping (ISC) and symbol decomposing with serial transmission (SDST) techniques decompose optical orthogonal frequency division multiplexing (O-OFDM) symbol into the fixed number of multiple small-amplitude symbols.However,at low O-OFDM symbol variances,the decomposition symbols contain a large amount of all-zero symbols without load information,which results in bit error rate degradation,optical power penalty and information rate reduction.Aim at this problem,an adaptive O-OFDM symbol decomposing with serial transmission (ASDST) system was proposed,the symbol decomposition was adaptively determined according to the O-OFDM symbol amplitude.Symbol decomposition was terminated until O-OFDM symbol was completely decomposed or the maximum symbol decomposition times were attained,thereby eliminated all-zero symbols and reduced the average symbol decomposition times.The performance of ASDST system was verified by theoretical analysis and Monte Carlo simulation.

Key words: visible light communication, O-OFDM, symbol decomposing with serial transmission, adaptive technique

中图分类号:

TN929.12

贾科军,杨博然,曹明华,黎锁平,郝莉. 可见光通信自适应O-OFDM符号分解串行传输系统设计与研究[J]. 通信学报, 2020, 41(9): 179-189.

Kejun JIA,Boran YANG,Minghua CAO,Suoping LI,Li HAO. Design and research of adaptive O-OFDM symbol decomposing with serial transmission system in visible light communication[J]. Journal on Communications, 2020, 41(9): 179-189.

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可见光通信自适应O-OFDM符号分解串行传输系统设计与研究

Design and research of adaptive O-OFDM symbol decomposing with serial transmission system in visible light communication

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