Chromatic Dispersion Robust Delta-Sigma Modulation for High-Order QAM Mobile Fronthaul

被引：1
作者：
Yang, Xiongwei [1 ,2 ]
Zhang, Long [1 ,2 ]
Yu, Jianjun [1 ,2 ]
Zhao, Xianming [3 ]
Wei, Yi [1 ,2 ]
Liu, Jiaxuan [1 ,2 ]
Wang, Mingxu [1 ]
Zhao, Feng [4 ]
Zhou, Wen [1 ,2 ]
Wang, Kaihui [1 ,2 ]
机构：
[1] Fudan Univ, MoE, State Key Lab ASIC & Syst, Key Lab Informat Sci Electromagnet Waves, Shanghai 200433, Peoples R China
[2] Fudan Univ, Sch Informat Sci & Technol, Shanghai 200433, Peoples R China
[3] Harbin Inst Technol, Harbin 150001, Peoples R China
[4] Xian Univ Posts & Telecommun, Sch Automat, Xian 710121, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2024年 / 36卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Encoding; Optical attenuators; Bandwidth; Optical amplifiers; Adaptive optics; Modulation; Quadrature amplitude modulation; High-order QAM; delta-sigma modulation; mobile fronthaul; intensity-modulated direct detection; TRANSMISSION; GENERATION; SYSTEM; FIBER;
D O I：
10.1109/LPT.2024.3352009
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We experimentally demonstrated Chromatic Dispersion (CD) robust Delta-Sigma Modulation (DSM) for high-order QAM mobile fronthaul. By using Duobinary (DB) encoding technology, the anti-dispersion ability of the DSM signal is effectively enhanced. At the same time, the DB coding technology can compress the signal bandwidth to a certain extent, thereby further improving the spectral efficiency of the digital mobile fronthaul based on the DSM technology. Through the joint coding scheme of DB and DSM, we successfully realized the 30 km fiber transmission of 30G baud DB-DSM signal in the C-band intensity modulation direct detection (IM/DD) link. Compared with the conventional NRZ-DSM scheme, the DB-DSM scheme shows better receiver sensitivity and can support the transmission of larger bandwidth signals.
引用
收藏
页码：301 / 304
页数：4
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