基于FPGA的超高灵敏度收发机研究及实验验证
Research and Experimental Verification of FPGA-based Ultra-High Sensitivity Transceivers
- 光通信研究 2026年第1期
- 作者机构：
1.国网福建省电力有限公司信息通信分公司，福州 350001
2.武汉光迅科技股份有限公司，武汉 430205
- 作者简介：
姚文杰（1985-），女，福建福州人。高级工程师，硕士，主要研究方向为通信规划运维及光传输运维。
吴剑军，硕士。E-mail：jianjun.wu@accelink.com
- 基金信息：国网福建省电力有限公司资助项目(SGFJXT00DDJS2310155)
DOI：10.13756/j.gtxyj.2026.240105
中图分类号： TN929收稿：2024-06-01，
修回：2024-06-21，
纸质出版：2026-02-10
- 稿件说明：
移动端阅览
姚文杰，陈均，黄惠琳，等. 基于FPGA的超高灵敏度收发机研究及实验验证[J]. 光通信研究，2026(1): 240105.
Yao W J, Chen J, Huang H L, et al. Research and Experimental Verification of FPGA-based Ultra-High Sensitivity Transceivers[J]. Study on Optical Communications, 2026(1): 240105.
姚文杰，陈均，黄惠琳，等. 基于FPGA的超高灵敏度收发机研究及实验验证[J]. 光通信研究，2026(1): 240105. DOI： 10.13756/j.gtxyj.2026.240105.
Yao W J, Chen J, Huang H L, et al. Research and Experimental Verification of FPGA-based Ultra-High Sensitivity Transceivers[J]. Study on Optical Communications, 2026(1): 240105. DOI： 10.13756/j.gtxyj.2026.240105.
摘要
目的
2
文章针对传统超长无中继通信系统中存在极高链路损耗，而导致传统收发机架构接收机灵敏度受限的问题，提出了一种基于现场可编程门阵列（FPGA）的超高灵敏度收发机方案，通过优化传统相干数字信号处理（DSP）算法，提出了无中继通信系统的实时通信方案。
方法
2
文章通过仿真建模分析了偏振复用正交相移键控（PDM-QPSK）信号在不同传输速率下的接收灵敏度，并利用4个远程增益单元（RGU）搭建了长达832.88 km的超长无中继通信系统，对实时传输进行了实验验证。
结果
2
仿真分析表明，优化后的超高灵敏度接收机在2.5 Gbit/s速率下的接收机灵敏度为-53.5 dBm，在625 Mbit/s速率下的接收机灵敏度为-59.3 dBm。成功完成了传输距离为832.88 km，传输速率为625 Mbit/s的PDM-QPSK实时无中继通信传输实验验证，其中G.654 E单模光纤的总传输损耗为121.2 dB。
结论
2
文章所提基于FPGA的相干收发架构能够在超低接收光功率下实现高灵敏度信号检测，并且通过将其与拉曼泵浦放大器与RGU相结合，可进一步延长超长无中继传输系统的传输距离。
Abstract
Objective
2
The objective of this paper is to address the problem of extremely high link loss in traditional ultra-long unrepeatered communication systems with limited receiver sensitivity of traditional transceiver architectures. An ultra-high sensitivity Field Programmable Logic Gate Array (FPGA) -based transceiver scheme is proposed
and a real-time communication scheme for the unrepeatered communication system is proposed by optimizing the traditional coherent Digital Signal Processing (DSP) algorithm.
Methods
2
The receiver sensitivity of Polarization-Division-Multiplexing Quadrature-Phase-Shift-Keying (PDM-QPSK) signal at different transmission rates is analyzed in simulation
and an ultra-long unrepeatered communication system of 832.88 km is constructed to experimentally validate the real-time transmission using four Remote Gain Units (RGU).
Results
2
The simulation analysis shows that the ultra-high sensitivity receiver after optimization has a receiver sensitivity of-53.5 dBm at 2.5 Gbit/s and-59.3 dBm at 625 Mbit/s. The experimental verification of real-time unrepeatered transmission is successfully completed for the PDM-QPSK signal transmission over a distance of 832.88 km and a rate of 625 Mbit/s
where G.654 E fiber and RGUs are used in the transmission link. The total transmission loss of the G.654 E single-mode fibre is 121.2 dB.
Conclusion
2
The proposed FPGA-based coherent transceiver architecture is capable of achieving high sensitivity signal detection at ultra-low received optical power. The transmission distance of the ultra-long unrepeatered transmission system can be further extended by combining it with Raman pump amplifiers and RGUs.
关键词
Keywords
references
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