Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers

Noor, Nur Haedzerin Md.; Naji, Ahmed Wathik; Al-Khateeb, Wajdi Fawzi Mohammed

doi:10.31436/iiumej.v13i1.271

Cited by 35 publications

(18 citation statements)

References 5 publications

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“…Multiple TX/RX combinations can raise the received power at the receiver. Thus the maximum achievable distance and BER can be improved [25]. Also, if the size of receiving aperture is larger than a spatial scale size that produces the irradiance fluctuations, the receiver will average the fluctuations over the aperture and the scintillation effect will be reduced [26].…”

Section: Atmospheric Turbulencementioning

confidence: 99%

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Sultana¹,

Barua²,

Akhtar³

et al. 2018

IJECE

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Free space optical (FSO) communication systems which are deployed for last mile access, being considered as a suitable alternative technology for optical fiber networks. It is one of the emerging technologies for broadband wireless connectivity which has also been receiving growing attention due to high data rate transmission capability with low installation cost and license free spectrum. However, the widespread use of FSO technology has been hampered by the randomly time varying characteristics of propagation path mainly due to atmospheric turbulence, sensitivity to diverse weather conditions and the nonlinear responsivity of laser diode. This paper presents the performance investigation of an OFDM-FSO system over atmospheric turbulence channels under diverse weather conditions of Bangladesh. The channel is modeled with gamma-gamma distribution using 16-QAM modulation format and 4×4 multiple transceiver FSO system. All possible challenges are imposed on the system performance such as atmospheric attenuation, turbulence, pointing error, geometric loss etc. The refractive index structure parameter and atmospheric attenuation coefficient for different weather conditions are calculated by using the data, collected from Bangladesh Meteorological Department. The acquired results can be fruitful for scheming, forecasting and assessing the OFDM-FSO system’s ability to transmit wireless services over turbulent FSO links under actual conditions of Bangladesh.

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Section: Atmospheric Turbulencementioning

confidence: 99%

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Sultana¹,

Barua²,

Akhtar³

et al. 2018

IJECE

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“…FSO has many advantages and among these are the lower costs related with the system, no RF license is required and the ability to exploit the massive potential bandwidth of OWC [88,89]. Using the MIMO technique in these types of systems has revealed great potential to improve the system performance [90,91].…”

Section: Optical Mimo Signals Over Fibrementioning

confidence: 99%

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

et al. 2020

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Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

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“…However there are some attempts is made for WDM [17] and hybrid WDM using single beam [14]- [20] and multibeam concept [21]- [26] where they have considered only DWDM channels with the channel spacing of 0.8 nm over the wavelength range of around 850 nm and 1,550 nm. Also, the authors did not accounted CWDM channels.…”

Section: Introductionmentioning

confidence: 99%

“…By using 1,550 nm wavelength, Mbps wireless transmission can be achieved by leveraging the technology developed for long haul optical communication. The hybrid WDM-FSO is a new research area which is proposed to overcome the limited received power, limited distance and limited scalability which are occurred in conventional FSO system [21].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Hybrid WDM-FSO System under Various Weather Conditions

Robinson¹,

Jasmine²

2016

Frequenz

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Free Space Optical (FSO) communication is being realized as an effective solution for future accessing networks, offering light passed through air. The performance of FSO system can be primarily degraded by various atmospheric attenuations such as rain, fog, haze and snow. At present, hybridization of Dense Wavelength Division Multiplexing (DWDM) with Coarse Wavelength Division Multiplexing (CWDM) becomes necessary to scale the speed and high bandwidth of the services. In this paper, primarily the attenuation values for different weather conditions are calculated. Then the hybrid WDM-FSO system is proposed, designed and the network parameters such as Bit Error Rate (BER), Quality factor (Q factor) and receiver sensitivity are analyzed with respect to link distance for various weather conditions. For investigation, four CWDM (1,510 nm, 1,530 nm, 1,570 nm and 1,570 nm) channel and eight DWDM channels (1,537.4 nm, 1,538.2 nm, 1,539 nm, 1,539.8 nm, 1,540.6 nm, 1,541.4 nm, 1,542.2 nm and 1,543 nm) are considered whose corresponding channel spacing is 20 nm and 0.8 nm, respectively. In addition, the Erbium Doped Fiber Amplifier (EDFA) is inserted at the receiver end in order to enhance the link distance. The proposed hybrid WDM-FSO system is designed to handle the quality of transmission for 12 users, each at a data rate of 2.5 Gbps along an FSO link distance of about 960 km.Keywords: free space optical communication, coarse wavelength division multiplexing, dense wavelength division multiplexing, atmospheric attenuations, bit error rate, link distance, erbium doped fiber amplifier, multibeam

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Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers

Cited by 35 publications

References 5 publications

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

Performance Analysis of Hybrid WDM-FSO System under Various Weather Conditions

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