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MEHTAB SINGH1,* , JYOTEESH MALHOTRA1
In this work, we report modeling and performance investigation of 40Gbit/s-80GHz orthogonal frequency division multiplexing (OFDM) based radio over free space optics (RoFSO) transmission system by incorporating mode division multiplexing (MDM) of two Hermite Gaussian (HG) modes (HG01 and HG03) under strong atmospheric turbulence conditions. Two independent 40GHz radio signals each optically modulated at 20Gbit/s are transmitted over free space channel under the impact of dynamic weather conditions and increasing beam divergence angle. Further, the decomposition of distinct HG channels at the receiver unit has been demonstrated. Also, an enhanced performance by using a Square root module (SRm) after the photodiode at the receiving unit has been proposed. The simulation results exhibit a significant improvement in the performance of the link in terms of SNR and total received power by using the proposed system..
Orthogonal frequency division multiplexing, Mode division multiplexing, Hermite Gaussian modes, Radio over free space optics, Atmospheric turbulence, Square root module.
MEHTAB SINGH, JYOTEESH MALHOTRA, Enhanced performance of 40Gbit/s-80GHz OFDM based radio over FSO transmission link incorporating mode division multiplexing under strong atmospheric turbulence, Optoelectronics and Advanced Materials - Rapid Communications, 13, 7-8, July-August 2019, pp.437-447 (2019).
Submitted at: Nov. 8, 2018
Accepted at: Aug. 20, 2019
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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