Toward Practical Temporal Diversity Coherent Combining Based Variable Data-Rate Free Space Optical Communication Systems

Faming Li; Sheng Cui; Yanan Chen; Chenjie Rao; Yicong Tu; Keji Zhou; Deming Liu

doi:10.1109/ACCESS.2022.3194015

IEEE Access (Jan 2022)

Toward Practical Temporal Diversity Coherent Combining Based Variable Data-Rate Free Space Optical Communication Systems

Faming Li,
Sheng Cui,
Yanan Chen,
Chenjie Rao,
Yicong Tu,
Keji Zhou,
Deming Liu

Affiliations

Faming Li: ORCiD; Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
Sheng Cui: ORCiD; Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
Yanan Chen: Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin, China
Chenjie Rao: ORCiD; Fiberhome Telecommunication Technologies Company Ltd., China Information Communication Technologies Group Corporation, Wuhan, China
Yicong Tu: Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
Keji Zhou: Fiberhome Telecommunication Technologies Company Ltd., China Information Communication Technologies Group Corporation, Wuhan, China
Deming Liu: Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China

DOI: https://doi.org/10.1109/ACCESS.2022.3194015
Journal volume & issue: Vol. 10
pp. 79480 – 79490

Abstract

Read online

Free-space optical communication (FSOC) systems with variable data-rates can support different missions with different transmission distances and ensure reliable transmission in periods of unfavorable weather conditions. The temporal diversity coherent combining (TDCC) technique can adjust the data-rate in a very large range using a software-defined manner by taking advantage of the digital coherent receivers able to recover the signal field. In this paper, we investigate the relationships between the computational complexity, optical phase alignment error, combining loss (CL) and data-rate for the TDCC-based variable data-rate coherent optical receiver. We also propose a method to minimize the computational complexity while achieving the expected output optical signal-to-noise ratio (OSNR) and the highest data-rate for an arbitrary input OSNR. Numerical simulations and experiments are carried out to validate the analytical expressions and proposed methods. The results provide an efficient tool and useful guidelines for the design of low computation complexity TDCC-based variable data-rate FSOC systems.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords