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MEHTAB SINGH1,* , JYOTEESH MALHOTRA1
In this work, we report the modeling and performance investigation of a novel hybrid MDM-OFDM-Multibeam based Radio over Free Space Optics (RoFSO) transmission link. The performance of the proposed link has been compared using single beam and 4-beams transmission under the effect of heavy fog conditions. We have demonstrated simultaneous transmission of two 20Gbit/s-40GHz information channels using distinct spatial Hermite Gaussian mode at 2000m link range. An improvement of 18 dB in SNR and 22 dB in total received optical power by using the proposed 4-beams transmission link design can be observed from the numerical results. Also, an improved performance of the proposed link using a Square root module (SRm) at the receiver terminal to maximize the range has been investigated. The numerical results report that the maximum link range with acceptable performance increases from 2000 m to 4000 m under heavy fog conditions by using the proposed enhanced detection technique..
Mode division multiplexing (MDM), Orthogonal frequency division multiplexing (OFDM), Multibeam; radio over free space optics (RoFSO), Atmospheric attenuation, Square root module (SRm), Link range.
MEHTAB SINGH, JYOTEESH MALHOTRA, 40Gbit/s-80GHz hybrid MDM-OFDM-Multibeam based RoFSO transmission link under the effect of adverse weather conditions with enhanced detection, Optoelectronics and Advanced Materials - Rapid Communications, 14, 3-4, March-April 2020, pp.146-153 (2020).
Submitted at: June 30, 2019
Accepted at: April 9, 2020
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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