Radio-over-free space optical space division multiplexing system using 3-core photonic crystal fiber mode group multiplexers

Amphawan, Angela; Chaudhary, Sushank; Neo, Tse‐Kian; Kakavand, Mohsen; Dabbagh, Mohammad

doi:10.1007/s11276-020-02447-4

Cited by 21 publications

(5 citation statements)

References 56 publications

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“…an expanded laser beam is transmitted through a liquid crystal display, and in other regions, no light passes through. The binarized beam may be expressed as a Fourier series expansion [45][46][47][48]50]:…”

Section: Methodsmentioning

confidence: 99%

“…The overall channel capacity was maximized by selecting optimal OAM mode numbers at each value of the SNR and turbulence strength. Spatial mode diversity has also been demonstrated using photonic crystal fibers [45][46][47][48]. Another approach for spatial mode diversity was demonstrated using Hermite-Gaussian (HG) and Laguerre-Gaussian (LG) modes of identical size [39].…”

Section: Free Space Optics For Post-flood Recovery Communicationsmentioning

confidence: 99%

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Post-Flood UAV-Based Free Space Optics Recovery Communications with Spatial Mode Diversity

et al. 2022

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The deployment of unmanned aerial vehicles (UAVs) for free space optical communications is an attractive solution for forwarding the vital health information of victims from a flood-stricken area to neighboring ground base stations during rescue operations. A critical challenge to this is maintaining an acceptable signal quality between the ground base station and UAV-based free space optics relay. This is largely unattainable due to rapid UAV propeller and body movements, which result in fluctuations in the beam alignment and frequent link failures. To address this issue, linearly polarized Laguerre–Gaussian modes were leveraged for spatial mode diversity to prevent link failures over a 400 m link. Spatial mode diversity successfully improved the bit error rate by 38% to 55%. This was due to a 10% to 19% increase in the predominant mode power from spatial mode diversity. The time-varying channel matrix indicated the presence of nonlinear deterministic chaos. This opens up new possibilities for research on state-space reconstruction of the channel matrix.

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Section: Methodsmentioning

confidence: 99%

Section: Free Space Optics For Post-flood Recovery Communicationsmentioning

confidence: 99%

Post-Flood UAV-Based Free Space Optics Recovery Communications with Spatial Mode Diversity

et al. 2022

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“…The 5G communication systems will change the rules of the game through high speed and great effectiveness in various areas of modern life, for example in; internet of things, healthcare, manufacturing, data analytic, disaster management, utilities observing, as well as e-learning, vedio conferences, and marketing, especially during the period of the COVID-19 pandemic (Amphawan et al 2020 ; Singh et al 2021 ). Although with these features, the 5G networks faces several challenges, as listed in the following.…”

Section: Introductionmentioning

confidence: 99%

Enhancing performance of WDM-RoFSO communication system utilizing dual channel technique for 5G applications

2022

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In this work, the performance of wavelength division multiplexing based radio over free space optics (WDM-RoFSO) communication system is investigated utilizing OptiSystem 0.7 software. Four weather conditions are adopted in this paper, namely, clear, haze, rain and fog with attenuation losses of 0.2 dB/km, 2.3 dB/km, 4.3 dB/km and 8 dB/km, respectively In addition, a high radio frequency of 30 GHz with high bit rate of 160 Gbps is modulated and carried on optical signal for fifth generation (5G) applications. The dual channel technique is employed in order to enhance the performance parameters of proposed WDM-RoFSO communication system. The enhancement in the link range is about; 46.1%, 35%, 29.4% and 25.9% for clear, haze, rain and fog, respectively.

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“…Studies [7][8][9] have also reported features of FSO including its high capacity, less power consumption, light weight, smaller size and cost-effective implementation charges. Radio over Free Space Optical (Ro-FSO) communication can be an excellent solution to fulfill the demands of high-speed data by combining radio technology with optical wireless technology at lower cost [10,11]. As modern cities are growing bigger and bigger, digging of lands to install optical fiber cables is not feasible.…”

Section: Introductionmentioning

confidence: 99%

Hybrid MDM-PDM Based Ro-FSO System for Broadband Services by Incorporating Donut Modes Under Diverse Weather Conditions

et al. 2021

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High-speed data demand in sensitive locations has prompted new wireless technologies to grow in areas like hospitals for bio-sensor data transmission between doctors and patients. However, interference of electromagnetic spectrum or highly sensitive medical equipment in such locations can prevent radio waves which can further compromise the health of patients. Radio over Free Space Optics (Ro-FSO) can fulfil high-speed data demand in such locations without any such interference. However, the Ro-FSO performance is highly influenced by different adverse weather conditions, particularly haze and rainfall, which further cause attenuation in the transmission path of Ro-FSO systems. These atmospheric turbulences mainly affect the transmission link range of Ro-FSO systems. In this work, Ro-FSO system is designed by incorporating hybrid mode division multiplexing (MDM) and polarization division multiplexing (PDM) schemes to deliver four independent channels, each carrying 10 Gbps data upconverted to 40 GHz radio signal, over 3.4 km free space optical link operating under clear weather conditions. In addition to this, the proposed Ro-FSO link is subjected to different weather conditions, particularly partially hazy/rainy and dense fog/very rainy. The reported results indicate the achievement of acceptable bit error rate (BER≈10–3) for all channels up to 3400m FSO link under clear weather conditions, 1000m under partially haze/rain and 620 m under dense fog/heavy rain.

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Radio-over-free space optical space division multiplexing system using 3-core photonic crystal fiber mode group multiplexers

Abstract: Radio-over-free space optical space division multiplexing system using 3-core photonic crystal fiber mode group multiplexers, Wireless Networks

Cited by 21 publications

References 56 publications

Post-Flood UAV-Based Free Space Optics Recovery Communications with Spatial Mode Diversity

Post-Flood UAV-Based Free Space Optics Recovery Communications with Spatial Mode Diversity

Enhancing performance of WDM-RoFSO communication system utilizing dual channel technique for 5G applications

Hybrid MDM-PDM Based Ro-FSO System for Broadband Services by Incorporating Donut Modes Under Diverse Weather Conditions

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