Experimental analysis of reducing outage probability using deep interleaving for long-distance free space optical systems

IF 2.3 4区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Optoelectronics Pub Date : 2024-07-16 DOI:10.1049/ote2.12122

Yunfan Chang, Shanyong Cai, Liqian Wang, Haojie Zhang, Zhiguo Zhang

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Abstract

Free space optical communication (FSO) has become a popular research direction due to its high bandwidth, easy deployment, and inherent security. Its channel state is unstable because of atmospheric environment, especially in long-distance ground transmission system. Interleaving combined with forward error correction coding (FEC) have been utilised to improve the stability of system. However, there is little detailed experimental results of deep interleaving combined with FEC under different atmospheric turbulence intensity over long-distance FSO system. A deep interleaving with FEC method was designed and implemented on a 7 km long online experiment. The performance of different depth interleaving is analysed under weak and strong atmospheric turbulence state. The experiment results show that deep interleaving performs better under weak turbulence for the larger correlation factor of the channel and the outage probability of the system with deep interleaving can be greatly reduced.

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利用深度交织降低长距离自由空间光学系统中断概率的实验分析

自由空间光通信（FSO）因其高带宽、易于部署和固有的安全性而成为热门研究方向。由于大气环境的影响，其信道状态并不稳定，尤其是在长距离地面传输系统中。人们利用交错与前向纠错编码（FEC）相结合的方法来提高系统的稳定性。然而，在长距离 FSO 系统中，不同大气湍流强度下深度交织与前向纠错编码相结合的详细实验结果很少。我们设计了一种深度交织与 FEC 方法，并在 7 公里长的在线实验中实施。分析了不同深度交织在弱和强大气湍流状态下的性能。实验结果表明，在弱湍流条件下，由于信道的相关系数较大，深度交织的性能更好，采用深度交织的系统的中断概率可以大大降低。

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来源期刊

Iet Optoelectronics 工程技术-电信学

CiteScore

4.50

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： IET Optoelectronics publishes state of the art research papers in the field of optoelectronics and photonics. The topics that are covered by the journal include optical and optoelectronic materials, nanophotonics, metamaterials and photonic crystals, light sources (e.g. LEDs, lasers and devices for lighting), optical modulation and multiplexing, optical fibres, cables and connectors, optical amplifiers, photodetectors and optical receivers, photonic integrated circuits, photonic systems, optical signal processing and holography and displays. Most of the papers published describe original research from universities and industrial and government laboratories. However correspondence suggesting review papers and tutorials is welcomed, as are suggestions for special issues. IET Optoelectronics covers but is not limited to the following topics: Optical and optoelectronic materials Light sources, including LEDs, lasers and devices for lighting Optical modulation and multiplexing Optical fibres, cables and connectors Optical amplifiers Photodetectors and optical receivers Photonic integrated circuits Nanophotonics and photonic crystals Optical signal processing Holography Displays