Non-Uniform-Digital-Analog Radio-Over-Fiber Scheme for Future Fronthaul Based on a Low-Complexity 4-Fold Symmetric Non-Uniform Quantization Method

被引：2

作者：

Wang, Mingxu ^{[1
,2
]}

Yu, Jianjun ^{[1
,2
]}

Zhao, Xianming ^{[3
]}

Wang, Chen ^{[1
,2
]}

Long, Jianyu ^{[1
,2
]}

Zhao, Feng ^{[4
]}

Zhou, Wen ^{[1
,2
]}

Wang, Kaihui ^{[1
,2
]}

机构：

[1] Fudan Univ, State Key Lab ASIC & Syst, Key Lab Informat Sci Electromagnet Waves MoE, Shanghai 200433, Peoples R China

[2] Fudan Univ, Sch Informat Sci & Technol, Shanghai 200433, Peoples R China

[3] Harbin Inst Technol, Inst Future Informat Technol, Harbin 150001, Peoples R China

[4] Xian Univ Posts & Telecommun, Sch Automat, Xian 710061, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2024年 / 42卷 / 19期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Quantization (signal); Signal to noise ratio; OFDM; Quadrature amplitude modulation; Optical fiber polarization; Symbols; Standards; CPRI; CPRI-EDR; C-RAN; DA-RoF; fiber-based fronthaul; non-uniform quantization; C-RAN; SIGNAL DELIVERY; 5G MOBILE; TRANSMISSION; REQUIREMENTS; SYSTEMS;

D O I：

10.1109/JLT.2024.3414152

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 propose a non-uniform-digital-analog radio-over-fiber (NUDA-RoF) scheme based on a low-complexity 4-fold symmetric non-uniform quantization method and demonstrate it experimentally in a polarization-division-multiplexed (PDM) coherent transmission system. The 50-Gbaud PDM-NUDA-RoF signal with a net rate of 391 Gb/s/lambda and a record single-channel common public radio interface equivalent data rate (CPRI-EDR) of 2 Tb/s/lambda is successfully delivered in a 10-km standard single-mode fiber (SSMF) link. Results show that the NUDA-RoF scheme achieves a maximum signal-to-noise ratio (SNR) gain of similar to 1.3 dB compared to digital-analog radio-over-fiber (DA-RoF) at an equivalent capacity. Significantly, the NUDA-RoF scheme demonstrates a similar to 3.8-dB optical signal-to-noise ratio (OSNR) sensitivity improvement over DA-RoF at the 256-QAM error vector magnitude (EVM) threshold. The NUDA-RoF scheme has advantages over analog-radio-over-fiber (A-RoF) and DA-RoF in terms of SNR improvement, as well as advantages over digital- radio-over-fiber (D-RoF) in CPRI-EDR. Our work suggests many optimistic possibilities for the future radio access networks and mobile fronthaul.

引用

页码：6798 / 6807

页数：10