Wang Mingxu, Yu Jianjun, Zhao Xianming, Li Weiping, Wei Yi, Yang Xiongwei, Shi Junting, Bian Chengzhen, Xie Tangyao, Zhao Feng, Yu Jianguo, Zhou Wen, Wang Kaihui
Opt Lett. 2023 Aug 1;48(15):3997-4000. doi: 10.1364/OL.498450.
We propose a digital-delta-sigma-modulation radio-over-fiber (DDSM-RoF) scheme for wireless fronthaul and validate it experimentally in a D-band photonics-aided RoF transmission system. The 10-Gbaud DDSM-RoF signal with a common public radio interface equivalent data rate (CPRI-EDR) of 55.8 Gb/s is successfully transmitted in a 130-GHz 4.6-km wireless channel. The spectral efficiency (SE) is 5.58 bit/s/Hz and the capacity-distance product reaches 257 Gb/s·km. Up to 34.4-dB recovered signal-to-noise ratio (SNR) is observed to support the 1024-quadrature-amplitude-modulation (1024-QAM) transmission. Compared with the digital-analog-RoF (DA-RoF) scheme, the proposed DDSM-RoF achieves an SNR improvement of 5.9 dB.
我们提出了一种用于无线前传的数字-Δ-∑调制光纤无线通信（DDSM-RoF）方案，并在D波段光子辅助RoF传输系统中进行了实验验证。具有55.8 Gb/s通用公共无线接口等效数据速率（CPRI-EDR）的10 Gbaud DDSM-RoF信号在130 GHz 4.6 km无线信道中成功传输。频谱效率（SE）为5.58 bit/s/Hz，容量-距离积达到257 Gb/s·km。观察到高达34.4 dB的恢复信噪比（SNR）以支持1024正交幅度调制（1024-QAM）传输。与数字-模拟-RoF（DA-RoF）方案相比，所提出的DDSM-RoF实现了5.9 dB的SNR改善。
