Abstract
Radio-over-free space optics (RoFSO) transmission scheme has numerous merits, as a result of which it has gained significant importance for future 5 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> generation (5G) mobile communications links. This work proposes a hybrid wavelength-mode division multiplexing (WMDM)-enabled RoFSO transmission scheme capable of transmitting high-speed data signals over free space channel. 4-data signals at 10 Gbit/s transporting 10 GHz radio frequency signals are multiplexed to realize 40 Gbit/s-40 GHz free space transmission. The proposed scheme is evaluated for varying weather attenuation scenarios and transmission from 680 m - 5 km is faithfully achieved with good bit error rate, quality factor, and received eye diagrams of the information signals.
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