Performance Analysis and Software-Defined Implementation of Real-Time MIMO FSO with Adaptive Switching in GNU Radio Platform

Htay, Zun, Ghassemlooy, Zabih, Mansour Abadi, Mojtaba, Burton, Andrew, Mohan, Nithin and Zvanovec, Stanislav (2021) Performance Analysis and Software-Defined Implementation of Real-Time MIMO FSO with Adaptive Switching in GNU Radio Platform. IEEE Access, 9. pp. 92168-92177. ISSN 2169-3536

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Abstract

In this paper, we provide the first software-based implementation of multiple-input multiple-output (MIMO) free space optical (FSO) link with the adaptive switching based on the software defined radio developed by GNU Radio software system, which emulates the real-time capability of the proposed scheme. We propose a switching mechanism to independently configure each transmitter and receiver, based on the channel state information provided at the transmitter via a feedback link and evaluate the link performance under atmospheric conditions such as fog and turbulence. We also validate the advantages of mitigating both the turbulence and fog in the proposed MIMO FSO system by means of numerical simulations and the developed GNU Radio software platform.

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