Simulation analysis of adaptive FSO/RF hybrid link under diverse weather conditions of Lahore, Pakistan

Yasir, Sultan Mahmood; Abas, Naeem; Rahman, Areeba; Saleem, Muhammad

doi:10.1016/j.rio.2020.100047

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…This path loss due to optical attenuation limits the received optical power at the receiver side. There is a sturdy relationship Wireless Communications and Mobile Computing between transmitter power and link distance [33]. This relationship between link distance (km) and received optical power is simulated under clear (0.1 dB/km), moderate (9.5 dB/km), and high attenuation (18.99 dB/km) conditions illustrated in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

Performance Analysis of Dual-Beam Free Space Optical Communication Link under Dust and Rain Conditions

Yasir

Abas

Rauf

et al. 2022

Wireless Communications and Mobile Computing

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Free space optical (FSO) communication has become an enduring and well-established communication technology in the last few decades with several advantages of high data rate, enormous bandwidth, low power consumption, transportable technology without right of way, and inherently secure line of a sight communication system. The invisible, intensity-modulated signal of light propagated through the air and detected on the receiver side experiences attenuation because of uneven distribution of rain droplets, suspended dust aerosol particles, and the droplet size distribution of fog particles in atmospheric layer degrade performance of FSO communication link. The ever-increasing demand for high data rate has quest for an innovative research for a communication link. In this paper, the performance of a dual-beam FSO communication link is evaluated under rain and dust as attenuation conditions. The system parameters, such as link distance transmitted and received power, link distance, diameter of transmitter and receiver aperture, and divergence angle, are optimized for a metropolitan FSO communication link. Dual-beam FSO communication signal propagated through an estimated attenuation level at 30 dBm transmitted power for link distance up to 2.5 km. The optical power splitter and power combiners are used in the simulation to estimate different channel parameters without the MIMO technique. The information signal of the 10 Gbps data rate is internally modulated using the NRZ generator, externally modulated by the Mach-Zehnder, and an optical signal transmitted through a dual-beam optical spectrum frequency of 193.1 THz using power splitter technique apart from each other. A comprehensive analysis is performed to design and assess robust optical communication systems through efficiency parameters such as received power, optical signal-to-noise ratio (OSNR), bit error rate (BER), and Q-factors. Results show that received optical power is a weather-dependent variable that shows a decreasing pattern as weather attenuation increases. Likewise, Q-factor and OSNR show similar decreasing trend with introduction of rain and dust as attenuator; however, BER increases in presence of attenuation.

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Section: Resultsmentioning

confidence: 99%

Performance Analysis of Dual-Beam Free Space Optical Communication Link under Dust and Rain Conditions

Yasir

Abas

Rauf

et al. 2022

Wireless Communications and Mobile Computing

Self Cite

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“…FSO performance can be impacted by various weather conditions. Simulation analyses for different weather conditions are performed at various regions in Lahore, Pakistan using an adaptive FSO/RF link and the results showed that [2], the solution to have good data rate in FSO communication links is at the penalty of increasing the transmitting power in changing weather scenarios. The adaptive system switched to RF when attenuation is high and to FSO link when attenuation is low which reduces the power requirement.…”

Section: Related Workmentioning

confidence: 99%

Development of Opto-Electronic Free Space Optics Rain Attenuation Mathematical Model with Optisystem for Topological Optical link Analysis

S. Selva Nidhyananthan

2023

cana

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The major obstacle in free space optics FSO is how the data penetrates atmospheric attenuation disturbances like rain, fog, dust storms and snow. The performance of FSO communications is greatly influenced by how one can choose the desired modulation technique. The proposed FSO circuit is designed with a free space range stretching up to 1.85 km. Even though it covers a small radius, we can implement this technique in areas where installing fiber optic cables is impractical. The goal of the proposed work is to use this system to create a new rain attenuation model TSNGH for our region with current rainfall data. For analysis of the FSO circuit under rain attenuation conditions, different kinds of experiments and calculations are carried out with the Optisystem software. With the help of the performance measures; Q factor and BER are evaluated and improved results are accomplished.

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“…In Yasir et al [ 195 ], the authors study fog and dust concentration to model a high-efficiency FSO communication link that utilizes an adaptive technique and switch over-analysis relying on the power received to maintain high data transmission rate. This project deploys the Kruse attenuation model for estimating the optical attenuation as it is more sensitive to 1550 nm wavelength.…”

Section: Hybrid Fso Networkmentioning

confidence: 99%

A Survey of Hybrid Free Space Optics (FSO) Communication Networks to Achieve 5G Connectivity for Backhauling

Aboelala

Lee

Chung

2022

Entropy

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Increased capacity, higher data rate, decreased latency, and better service quality are examples of the primary objectives or needs that must be catered to in the near future, i.e., fifth-generation (5G) and beyond. To fulfil these needs, cellular network design must be drastically improved. The 5G cellular network design, huge multiple-input multiple-output (MIMO) technology, and device-to-device communication are all highlighted in this comprehensive study. Hence, free-space optics (FSO) is a promising solution to address this field. However, FSO standalone is insufficient during turbulent weather conditions. FSO systems possess some limitations, such as being able to be disturbed by any interference between sender and receiver such as a flying bird and a tree, as it requires line-of-sight (LOS) connectivity. Moreover, it is sensitive to weather conditions; the FSO performance significantly decreases in bad weather conditions such as fog and snow; those factors deteriorate the performance of FSO. This paper conducts a systematic survey on the existing projects in the same area of research such as the hybrid FSO/Radio frequency (RF) communication system by listing each technique used for each model to achieve optimum performance in terms of data rate and Bit Error Rate (BER) to be implemented in 5G networks.

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Simulation analysis of adaptive FSO/RF hybrid link under diverse weather conditions of Lahore, Pakistan

Cited by 11 publications

References 14 publications

Performance Analysis of Dual-Beam Free Space Optical Communication Link under Dust and Rain Conditions

Performance Analysis of Dual-Beam Free Space Optical Communication Link under Dust and Rain Conditions

Development of Opto-Electronic Free Space Optics Rain Attenuation Mathematical Model with Optisystem for Topological Optical link Analysis

A Survey of Hybrid Free Space Optics (FSO) Communication Networks to Achieve 5G Connectivity for Backhauling

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