Estimation of free space optics systems availability based on meteorological visibility

Prokeš, Aleš; Skorpil, Vladislav

doi:10.1109/latincom.2009.5305266

Cited by 18 publications

(13 citation statements)

References 3 publications

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“…where F is the cumulative distribution function, CDF, obtained from the probability of airport visibility data, PDF, [3].…”

Section: Availability=probability Lm Loss Atmmentioning

confidence: 99%

“…CDF vs. visibility, Figure 5, is drawn through the following steps: (a) From the number of observations for each V, probability density function PDF data, (b) then added to give cumulative distribution function CDF data, (c) the resulting data are fitted approximately to a thirdorder polynomial [3], the solid line in Figure 5. 8) is the basis for the availability computation, at that V is converted to R via Figure 4 data.…”

Section: Cumulative Distribution Functionmentioning

confidence: 99%

“…A literature survey has indicated that the link availability assessment is possible by the statistical analysis of the airport recorded visibility values, alone [3]. The suggested statistical analysis is based on the cumulative distribution function (CDF) of the visibility and has yielded positive results in order to estimate the OWC availability for the mid-north and especially the Mediterranean regions of Europe.…”

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confidence: 99%

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Visibility based on optical wireless availability assessment for continental climate conditions

OZEK¹

2015

Communications Faculty of Science University of Ankara

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Potential application of the cumulative distribution function of the airport visibility data, a statistical technique suggested and tested for various regions in Europe, is verified for optical wireless availability and range assessment in the city of Ankara, the regional center of continental climate mid -Anatolia. Results, obtained by computations with reference to the system parameters of the enterprise class Ankara University optical wireless link have been presented.

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“…where F is the cumulative distribution function, CDF, obtained from the probability of airport visibility data, PDF, [3].…”

Section: Availability=probability Lm Loss Atmmentioning

confidence: 99%

Section: Cumulative Distribution Functionmentioning

confidence: 99%

mentioning

confidence: 99%

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Visibility based on optical wireless availability assessment for continental climate conditions

OZEK¹

2015

Communications Faculty of Science University of Ankara

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“…It has the advantage of less Electromagnetic Magnetic interference, high bandwidth available, low power usage and simple receiver design [2]. But at the same time the link availability depends on the climatic condition [3][4][5]. This technology is protocol independent that can provide full duplex data transmission.…”

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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“…This line of sight technology offers numerous advantages to both telecommunication users and providers. It provides a high data rates up to several Gbps, has immunity to radio frequency interferences, requires no licensing, gives a highly secured communication link due to the usage of a very narrow beam angle, and offers an inexpensive, fast and easy deployment when compared to the fiber optic installation [1,2].…”

Section: Introductionmentioning

confidence: 99%

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

Noor¹,

Naji²,

Al-Khateeb³

2012

IIUMEJ

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Â Multiple transmitters/receivers (TX/RX) are used to improve the quality of Free Space Optics (FSO) communication systems. With the current needs of this technology for longer distance communication, the qualitative analysis of the system has become essential. In this work, the received power level (PR) and bit error rate (BER) are considered to influence the FSO link performance. The relationship between the two parameters are investigated and analysed. Furthermore, the received power for various numbers of TXs and RXs are experimentally measured and compared with the values obtained from theoretical calculations. The first part of the work deals with the theoretical calculation and simulation designs of multiple laser beams based on the commercial FSO used in actual sites. The second part describes the practical work and analysis of the systemâ€™s performance.ABSTRAK: Pemancar/penerima berganda (TX/RX) digunakan bagi meningkatkan kualiti sistem komunikasi Ruang Optik Bebas (FSO). Analisis kualitatif ke atas sistemnya adalah penting bagi keperluan semasa teknologi ini untuk jarak jauh. Di dalam kajian ini, aras kuasa penerima (PR) dan kadar ralat bit (BER) telah diambilkira bagi menentukan prestasi rangkaian FSO. Hubungan di antara kedua-dua parameter telah dikaji dan dianalisis. Seterusnya, kuasa penerima untuk pelbagai nombor TXs dan RXs diukur secara eksperimen dan dibandingkan dengan nilai teori yang dikira. Bahagian pertama skop kajian berkaitan dengan pengiraan teori dan rekabentuk simulasi sinaran laser berdasarkan FSO komersial di lapangan. Bahagian kedua kajian adalah kerja lapangan dan analisis prestasi sistem.KEY WORDS:Â Free Space Optics (FSO) link; Multiple TX/RX FSO; bit error rate (BER); eye diagram.

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Estimation of free space optics systems availability based on meteorological visibility

Cited by 18 publications

References 3 publications

Visibility based on optical wireless availability assessment for continental climate conditions

Visibility based on optical wireless availability assessment for continental climate conditions

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

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

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