Adaptive Transceiver Design for High-Capacity Multi-Modal Free-Space Optical Communications With Commercial Devices and Atmospheric Turbulence
Adaptive Transceiver Design for High-Capacity Multi-Modal Free-Space Optical Communications With Commercial Devices and Atmospheric Turbulence
复制标题
具有商用设备和大气湍流的大容量多模自由空间光通信的自适应收发机设计
DOI：
10.1109/jlt.2023.3242215
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发表时间：
2023-06
影响因子：
4.7
通讯作者：
Zhouyi Hu;Zhaozhong Chen;Yiming Li;D. Benton;Abdallah El Ali;Mohammed Patel;Martin P. J. Lavery;A. Ellis
中科院分区：
文献类型：
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作者：
Zhouyi Hu;Zhaozhong Chen;Yiming Li;D. Benton;Abdallah El Ali;Mohammed Patel;Martin P. J. Lavery;A. Ellis
在本文中，以实现更高的鲁棒性对大气湍流的大容量自由空间光（FSO）通信，自适应多模FSO收发器已被设计和实验证明。我们表明，基于动态估计的信道状态信息，调制格式和功率为不同的发送模式可以自适应地分配在发送端。同时，在接收端，我们表明，最合适的多输入/多输出解码器可以选择和采用，以满足前向纠错的要求，在最小的功耗为代价。通过采用时分复用的发射机和接收机仿真和空间光调制器的湍流仿真，聚合数据速率为590 Gbit/s/波长时，遭受强大气湍流，验证了所提出的自适应收发器在湍流FSO链路的可行性。此外，为了证明实用性，所有的关键设备，如转发器，多路复用器和解复用器在这项工作中是商业上可用的。
In this paper, to achieve higher robustness against atmospheric turbulence for high-capacity free-space optical (FSO) communications, an adaptive multi-modal FSO transceiver has been designed and experimentally demonstrated. We show that based on the dynamically estimated channel state information, modulation formats and power for different transmit modes can be adaptively allocated at the transmitter side. Meanwhile, at the receiver side, we show that the most suitable multi-input/multi-output decoder can be selected and employed to meet the requirement of forward error correction at the minimal expense of power consumption. By employing time-division multiplexed transmitter and receiver emulation and a spatial light modulator for turbulence emulation, an aggregate data rate of 590 Gbit/s/wavelength has been achieved when suffering from strong atmospheric turbulence, verifying the feasibility of the proposed adaptive transceiver over a turbulent FSO link. Moreover, to demonstrate practical applicability, all key devices such as transponder, multiplexer, and demultiplexer are commercially available in this work.