Performance comparison of high-speed long-reach mode division multiplexing-based radio over free space optics transmission system using different modulation formats under the effect of atmospheric turbulence

2019 ◽  
Vol 58 (04) ◽  
pp. 1 ◽  
Author(s):  
Mehtab Singh ◽  
Jyoteesh Malhotra
Keyword(s):  
Atmospheric Turbulence ◽  
Free Space ◽  
High Speed ◽  
Transmission System ◽  
Performance Comparison ◽  
Free Space Optics ◽  
Modulation Formats ◽  
Space Optics ◽  
Mode Division Multiplexing

2 × 10 Gbit/s–10 GHz Radio over Free Space Optics Transmission System Incorporating Mode Division Multiplexing of Hermite Gaussian Modes

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Mehtab Singh ◽  
Jyoteesh Malhotra
Keyword(s):  
Free Space ◽  
Transmission System ◽  
Free Space Optics ◽  
Space Optics ◽  
Mode Division Multiplexing ◽  
The Impact

AbstractIn this paper, we report the modeling and simulative investigation of a mode division multiplexing (MDM)-based Radio over Free space optics (RoFSO) transmission system. Two separate 10 Gbit/s–10 GHz information signals are transported successfully over 30 km link range using distinct Hermite Gaussian (HG) modes. Also, the decomposition of distinct modes at the receiver terminal has been reported in this work. Furthermore, the impact of different fog conditions and scintillation effect on the performance of the proposed link has also been discussed in this paper.

Selection of suitable wavelengths for the dual-wavelength model of free space optics (FSO) systems for high-speed trains

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Abhijot kaur ◽  
Neeraj Sharma ◽  
Jatinder Singh
Keyword(s):  
Free Space ◽  
Communication Systems ◽  
High Speed ◽  
Dual Wavelength ◽  
Free Space Optics ◽  
Radio Communication ◽  
Modulation Formats ◽  
Space Optics ◽  
High Speed Trains ◽  
Selection Of

AbstractFree space optics (FSO) can be used as an alternative to the currently used wireless radio communication systems to meet the increasing demands for the uninterrupted internet connection in High-Speed Trains (HSTs). FSO is less prone to interference, license-free and more secure as compared to Radio Frequency (RF) technology. In this paper, we have compared three different wavelengths (850, 1330, and 1550 nm) for the dual-wavelength model at a bit rate of 10 Gb/s to see which two wavelengths provide better results. The system is studied for return to zero (RZ) and non-return to zero (NRZ) modulation formats this electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet.

A 2 × 20 Gbps hybrid MDM-OFDM–based high-altitude platform-to-satellite FSO transmission system

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Vel Murugan Gomathy ◽  
T. V. Paramasivam Sundararajan ◽  
C. Sengodan Boopathi ◽  
Pandiyan Venkatesh Kumar ◽  
Krishnamoorthy Vinoth Kumar ◽  
...  
Keyword(s):  
High Altitude ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Satellite Communication ◽  
Input Power ◽  
Transmission System ◽  
Communication Link ◽  
Space Optics ◽  
High Altitude Platform ◽  
Mode Division Multiplexing

AbstractIn the present study, the application of free space optics (FSO) transmission system to realize a long-reach high-altitude platform (HAP)-to-satellite communication link has been exploited. High-speed information transmission without interference is accomplished using orthogonal frequency division multiplexing (OFDM). Further, the information capacity of the proposed system is increased by employing mode division multiplexing (MDM). We have investigated the proposed MDM-OFDM-HAP-to-satellite FSO transmission system performance over varying FSO range, diameter of the receiver, pointing errors, and input power. Also, an improved transmission performance of the proposed system using a square root module is reported.

Empirical Evaluation of High-speed Cost-effective Ro-FSO System by Incorporating OCDMA-PDM Scheme under the Presence of Fog

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sushank Chaudhary ◽  
Sunita Choudhary ◽  
Xuan Tang ◽  
Xian Wei
Keyword(s):  
Free Space ◽  
High Speed ◽  
Optical Network ◽  
Empirical Evaluation ◽  
Cost Effective ◽  
Free Space Optics ◽  
Space Optics ◽  
Optical Cable ◽  
Application Systems ◽  
Support Cost

AbstractRadio over free space optics (Ro-FSO) innovation saddles the vast limit of optical fiber and the portability from local to remote systems. To enhance the capacity of Ro-FSO systems without compromising the bandwidth, this work incorporates use of hybrid polarization division multiplexing (PDM) with optical code division multiplexing (OCDMA) schemes. Due to low deployment time and support cost, the vast majority of the current optical network application systems adopts free space optics (FSO) as the elective answer for suitably supplanting fiber optical cable. This study has incorporated PDM and OCDMA schemes to design a 50 Gbps Ro-FSO link. Ten channels, each with 5 Gbps of data, are transported via FSO link of 3500 m. In addition, the proposed PDM-OCDMA-Ro-FSO link is evaluated under various atmospheric commotions.

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