High speed CO-OFDM-FSO transmission system

Sharma, Vishal; Sushank,

doi:10.1016/j.ijleo.2013.10.010

Cited by 64 publications

(22 citation statements)

References 8 publications

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“…Orthogonal frequency division multiplexing (OFDM) is a mature technology for combating multipath fading in FSO. Hence, by adopting OFDM in FSO, long haul transmissions with higher data rate may be achieved [24][25][26][27][28]. Mode division multiplexing is a more recent development in FSO systems [29][30][31][32].…”

Section: Fso For Terrestrial Communicationmentioning

confidence: 99%

The Role and Challenges of Free-space Optical Systems

Chaudhary¹,

Amphawan²

2014

Journal of Optical Communications

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Abstract:Complementing wireless radio networks with free-space optics (FSO) achieves high data rates by modulating radio subcarriers over an optical carrier without expensive optical fiber cabling, enabling a pervasive platform for reaching underserved areas. In this paper, we review the main features of FSO for terrestrial and inter-satellite communications. Simulations of 1 Gbps data transmission through FSO links in both terrestrial and inter-satellite communications have been investigated to highlight potential atmospheric challenges in FSO.

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Section: Fso For Terrestrial Communicationmentioning

confidence: 99%

The Role and Challenges of Free-space Optical Systems

Chaudhary¹,

Amphawan²

2014

Journal of Optical Communications

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“…At receiving satellites, received signal are demodulated using photodiodes and thus original signal is recovered [4][5][6][7]. In OWC, Orthogonal Frequency Division Multiplexing (OFDM) technology has played an vital role for it capacity in reducing multipath fading effects [8][9][10][11][12][13][14][15][16]. OFDM uses subcarriers which are separated by specific frequencies of overlapping band for data transportation.…”

Section: Introductionmentioning

confidence: 99%

“…Further for orthogonal sequence, these subcarriers utilize Fast Fourier Transformation (FFT) [17,18]. Thus OFDM is used for high data transmission and lower fading impacts [19][20][21]. Though the vacuum is assumed to be perfect, path loss which increases as square f the distance is huge.…”

Section: Introductionmentioning

confidence: 99%

“…Though the vacuum is assumed to be perfect, path loss which increases as square f the distance is huge. Further Is-OWC links are sensitive for pointing errors which may arise due to misalignment, vibrations or tracking errors [22][23][24][25][26][27][28][29][30][31][32][33][34][35] [2][3][4][5][6][7][8][9][10][11][12]. In our work OFDM-DPSK-Is-OWC system is designed to transmit 10 Gbps data over a distance of 10,000 Km under the impact of turbulence.…”

Section: Introductionmentioning

confidence: 99%

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High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

Sharma¹,

Kumar²,

Chandni³

2018

IJCA

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Inter-satellite communication is a free-space optical technology which is used to establish communication between satellites in space. This work is focused on the transmission of 10 Gbps data over 10,000 km inter-satellite communication link by incorporating orthogonal frequency division multiplexing scheme. The performance of proposed system is evaluated in terms of signal-to-noise ratio, total received power, radio-frequency spectrum and constellation diagrams. KeywordsInter-satellite communication (Is-OWC), Orthogonal frequency division multiplexing (OFDM), Differential phase shift key (DPSK).

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“…Optical amplification appeals to earth-to-satellite uplinks [5][6][7][8][9]. Researchers have also investigated the utilization of FSO for ground communication systems [10][11][12][13]. As the recent data rates have shown the use of Inter-satellite communication up to several Tbps, Intersatellite wireless link requires further improvement for better utilisation.…”

Section: Introductionmentioning

confidence: 99%

6 x 20Gbps Long Reach WDM-PI based High Altitude Platform Inter-Satellite Communication System

Chaudhary¹,

Sharma²,

Neetu³

2015

IJCA

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InterSatellite communication is one of the remarkable technologies in the era of high altitude platform (HAP) communication system. This work is focused on the transmission of six channels, each carrying 20Gbps non return to zero (NRZ) data over inter-satellite link of 3500Km by adopting wavelength division multiplexing (WDM) and polarization interleaving (PI) scheme. The results are reported in terms of signal to noise ratio (SNR), total received power and eye diagrams which show successful transmission of 20x6Gbps data up to 3500km.

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High speed CO-OFDM-FSO transmission system

Cited by 64 publications

References 8 publications

The Role and Challenges of Free-space Optical Systems

The Role and Challenges of Free-space Optical Systems

High Speed and Long Reach DPSK-OFDM-Is-OWC under Impact of Space Turbulences

6 x 20Gbps Long Reach WDM-PI based High Altitude Platform Inter-Satellite Communication System

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