Abdul Rahman, Kram and Kwang Thai, C.A. and Tamrin, K. F. and Sahari, S.K. (2021) Subtraction dual-wavelength for enhanced transmission performance of free-space optical communication over turbulence effect. Electronics Letters (2021). pp. 1-3. ISSN 0013-5194
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Abstract
Performance of a free-space optical communication system is influenced by atmospheric turbulence which degrades signal transmission quality. A gamma–gamma channel model is employed to characterise this turbulence under weak-to-strong conditions. The proposed dual diffuser modulation using subtraction dual-wavelength concept is combined with a phase screen diffuser to improve signal transmission. Its performances are compared with conventional intensity modulationdirect detection on off keying and partial coherent beam on off keying techniques. In comparison, results show that the dual diffuser modulation demonstrates superior performances in both received power and bit rate transmission under different turbulence conditions.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Engineering Faculties, Institutes, Centres > Faculty of Engineering |
| Depositing User: | Sanawi |
| Date Deposited: | 16 Dec 2021 08:29 |
| Last Modified: | 16 Dec 2021 08:29 |
| URI: | http://ir.unimas.my/id/eprint/37247 |
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