可见光通信中抗非线性方法的比较研究

被引：4

作者：

王灿

周盈君

迟楠

机构：

[1] 复旦大学通信科学与工程系电磁波信息科学教育部重点实验室

来源：

中国照明电器 | 2017年 / 07期

关键词：

可见光通信; LED非线性; 预失真; 后失真; Volterra均衡;

D O I：

暂无

中图分类号：

TN929.1 [光波通信、激光通信];

学科分类号：

0803 ;

摘要：

可见光通信(VLC)可以利用照明用的LED灯进行信息传递,为通信领域拓宽了另一扇大门。但是LED的传递曲线并非线性的,当信号能量达到一定幅度,信号进入LED的非线性区导致变形,会为传递信息带来诸多麻烦。由于正交频分复用技术(Orthogonal Frequency Division Multiplexing,OFDM)是可见光通信中重要的调制方式之一,其高PAPR(峰均功率比)特性会增大信号传递在LED的非线性区的概率,所以大量专家学者致力于VLC系统的抗非线性方法来提高通信系统的性能。本文对现有已经提出的不同的抗非线性的方法进行探讨总结,如Volterra均衡技术等,为进一步理解和研究可见光通信系统的抗非线性技术提供参考。

引用

页码：9 / 15+26 +26

页数：8

共 9 条

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