The effect of weather on free space optics communication (FSO) under tropical weather conditions and a proposed setup for measurement

Zabidi, Suriza Ahmad; Khateeb, Wajdi Al; Islam, Md. Rafiqul; Naji, Ahmed Wathik

doi:10.1109/iccce.2010.5556757

Cited by 32 publications

(14 citation statements)

References 5 publications

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“…There is always a tradeoff among channel length, bit rate and error performance during designing the communication systems. In FSO communication, the link performance is truly influenced by weather conditions, the signal degradation caused by weather is known as atmospheric attenuation effects [4,11,12]. The most common atmospheric attenuation factors are beam divergence, absorption, scattering and refractive turbulence [4,11].…”

Section: Overview Of Fso Technologymentioning

confidence: 99%

Terrestrial free space optical communications in Bangladesh: transmission channel characterization

Shahiduzzaman

Haider

Karmaker

2019

IJECE

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This research work focused on transmission channel characterization of Free-Space-Optical (FSO) communications technology for deploying in the developing country like Bangladesh. To meet the tremendous amount of data traffic, mobile operators and ISPs need better solution than the existing RF and fiber optic communications. Moreover, Bangladesh is entering in the era of satellite communications by launching its own satellite. So, Bangladesh needs such communication technology that provides higher channel bandwidth, sophisticated transmission security and can cope channel dispersion. FSO is a good candidate that can meet all these features. The transmission channel characterization plays a significant role in optimizing the performance of FSO link. In this work, the channel characterization of FSO technology from the weather perspective of Bangladesh has been investigated thoroughly. The obtained results show that the atmospheric scattering effect does not hamper the short range FSO link performance, whereas, the atmospheric turbulence effect is not favorable to deploy FSO technology with reasonable quality signal unless it is optimized properly using antenna aperture averaging technique.

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Section: Overview Of Fso Technologymentioning

confidence: 99%

Terrestrial free space optical communications in Bangladesh: transmission channel characterization

Shahiduzzaman

Haider

Karmaker

2019

IJECE

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“…It becomes a great challenge in FSO communications. These challenges include rain, dust particles, fog, snow, dense smoke, fading due to turbulence, etc [5,6], also the scintillation effects increase the impairment of the FSO links [7]. One of the solutions proposed to address the turbulence is by using hybrid system (FSO switches to RF) [8], multiple-input multiple-output (MIMO) FSO systems [9], and Radio over FSO (RoFSO) [10].…”

Section: Introductionmentioning

confidence: 99%

Utilization of MIMO Concept for Optical Communication System under Fog Condition

Shakir¹,

Ali

Ameer³

2019

ECTI-EEC

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Free-space optical (FSO) communication consider license free, high data rate, wide bandwidth and cost-effective. Multi-input Multi-output (MIMO) systems can be employed to reduce the attenuation by heavy fog and improve FSO channel capacity. In this paper a single-input single-output and multi–input multi-output examined to investigate the performance of these systems under heavy fog. A comparison is made in terms of received optical power, signal to noise ratio, and bit error rate (BER) using OptiSystem version 7.0. The signal reaches to link up to 1.7km, 1.55km, 1.5km, and 1.4km for 4Tx/4Rx, 3Tx/3Rx, 2Tx/2Rx, 1Tx/1Rxrespectively. The results showed that the quality of received power is enhancement by using up to four beams.

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“…Meteorological effects like fog, rain, mist, haze, scintillation etc. cause the light intensity to fluctuate [8,9]. Attenuation of the optical signal in free space may also be caused by atmospheric phenomena like absorption and scattering.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Link Availability in FSO-OFDM System under Various Climatic Conditions

Rajendrakumar

Karruppaswamy²

2015

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Free Space Optics (FSO) is an emerging solution for the last mile broad band connectivity where deployment of fiber is expensive. This wireless technology has attracted the researchers due to the ease of erecting along the windows and terrace and the abundant bandwidth available in the unlicensed band. Combining OFDM with FSO gives a hybrid technique-OFDM based FSO or FSO-OFDM in which OFDM symbol modulates the light that passes through free space. Various predictable and unpredictable phenomena cause variation in the light that causes the fading effect of the received signal. Besides the atmospheric effect, the signal power varies within the symbol. The link availability has been calculated by setting threshold power at the receiver. The simulation of the OFDM based FSO system under three climatic conditions namely summer, winter and rainy has been observed that shows the link availability is 99.3% for summer, 98.32% for winter and 98.99% for rainy condition. Under worst climatic condition link availability is 98.17%. Thus FSO-OFDM is able to provide better connectivity even under any atmospheric condition.

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The effect of weather on free space optics communication (FSO) under tropical weather conditions and a proposed setup for measurement

Cited by 32 publications

References 5 publications

Terrestrial free space optical communications in Bangladesh: transmission channel characterization

Terrestrial free space optical communications in Bangladesh: transmission channel characterization

Utilization of MIMO Concept for Optical Communication System under Fog Condition

Analysis of Link Availability in FSO-OFDM System under Various Climatic Conditions

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