Research on full duplex FSO access system with hybrid 16PSK/256QAM-OFDM downlink and duobinary uplink signals

被引：0

作者：

Shao, Yufeng ^{[1
]}

Yu, Ni ^{[1
]}

Wang, Anrong ^{[1
]}

Tian, Qing ^{[1
]}

Yi, Linfang ^{[1
]}

Yang, Qiming ^{[1
]}

Li, Yanlin ^{[1
]}

Liu, Shuanfan ^{[1
]}

Yuan, Jie ^{[1
]}

Zuo, Renjie ^{[1
]}

Chen, Peng ^{[1
]}

Li, Chong ^{[1
]}

机构：

[1] Chongqing Three Gorges Univ, Coll Elect & Informat Engn, Chongqing 404100, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2024年 / 550卷

关键词：

FSO; Full; -duplex; 16PSK/256QAM-OFDM; Duobinary; BER;

D O I：

10.1016/j.optcom.2023.129956

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

a 100Gbit/s novel full duplex free space optical (FSO) access system scheme is proposed and demonstrated. Using the downlink hybrid 16phase shift keying (PSK)/256quadrature amplitude modulation (QAM)-orthogonal fre-quency division multiplexing (OFDM) and duobinary uplink signals. In downlink branch, in-phase/quadrature-phase (I/Q) modulation based on Mach-Zehnder modulator (MZM) and coherent detection technology are adopted. Meanwhile, 0.1Terahertz (THz) wave signal generated by two independent optical sidebands beating frequency at positive intrinsic-negative photodiodes (PIN PDs) for hybrid downlink 16PSK/256QM-OFDM sig-nals. In uplink branch, intensity modulation and direct detection (IM/DD) can achieve reduced the communi-cation budget cost and simplified the system configuration Simulation results show that the value of bit error ratio (BER) less than hardware decision forward error correction (HD-FEC) threshold after 300 m FSO channel transmission under the different weather conditions (such as sunny, rainy and snow).

引用

页数：6