摘要
针对现有基于多载波的水下无线光通信码间干扰高,传输效率低的情况,提出了一种基于直流偏置的光学滤波器组多载波技术(DCO-FBMC)。对FBMC技术进行改进,对调制后的信号进行Hermitian对称,最后添加直流偏置,使其能适用于IM/DD信道。再将扩展高斯函数(EGF)作为原型函数,提升其整体传输效率。在水下无线光通信中使用FBMC的可行性尚未得到验证。解决了FBMC算法不适用于IM/DD信道的问题,并且性能优于其他适用于水下无线光信道的多载波技术,最后实验仿真说明了所提算法的有效性。
In view of the high inter-code interference and low transmission efficiency of the existing multi-carrier based underwater wireless optical communication,this paper proposes a Filter bank multicarrier technology.The FBMC technology is improved,the modulated signal is Hermitian symmetric,and finally the DC offset is added to make it suitable for the IM/DD channel.The Extended Gaussian Function is used as a prototype function to improve its overall transmission efficiency.The feasibility of using FBMC in underwater wireless optical communication has not been verified.This paper solves the problem that FBMC algorithm is not suitable for IM/DD channel,and its performance is better than other multi-carrier technology suitable for underwater wireless optical channel.Finally,the experimental simulation demonstrates the effectiveness of the proposed algorithm.
作者
陶永生
张驰
Tao Yongsheng;Zhang Chi(Jiangsu university of science and technology,Zhenjiang 212003,China)
出处
《电子测量技术》
2020年第10期153-157,共5页
Electronic Measurement Technology
作者简介
陶永生,硕士研究生,主要研究方向为水下激光通信。E-mail:njjzc14@126.com
