Performance enhancement of LEO-to-ground FSO systems using All-optical HAP-based relaying
| Autor: | Nga T. T. Nguyen, Hien T. T. Pham, Ngoc T. Dang, Minh Q. Vu |
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| Rok vydání: | 2018 |
| Předmět: |
Power gain
Computer science Node (networking) Optical communication Free-space path loss 02 engineering and technology law.invention 020210 optoelectronics & photonics Transmission (telecommunications) Relay law Computer Science::Networking and Internet Architecture 0202 electrical engineering electronic engineering information engineering Bit error rate Electronic engineering Path loss Electrical and Electronic Engineering Computer Science::Information Theory |
| Zdroj: | Physical Communication. 31:218-229 |
| ISSN: | 1874-4907 |
| Popis: | In this paper, we propose to use all-optical high altitude platform (HAP)-based relaying technique to improve the performance of the free-space optical communication (FSO) system from a low-earth orbit (LEO) satellite to the ground station. Two all-optical relaying techniques are applied to HAP-based relay node including optical amplify-and-forward (OAF) and optical detect-amplify-and-forward (ODAF). A closed-form expression for bit error rate (BER) of the proposed relay-assisted LEO-to-ground FSO system under the effects of free space loss, path loss, and atmospheric turbulence is derived. We also carry out Monte-Carlo (M-C) simulation to verify the theoretical results in terms of BER and the quality of image transmission. The numerical results show that 28 dB power gain at BER of 1 0 − 9 can be achieved thanks to the use of HAP-based relaying. Also, lower BER that results in better quality of restored images at the ground station is demonstrated in this paper. |
| Databáze: | OpenAIRE |
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