Combined Envelope Scaling with Modified SLM Method for PAPR Reduction in OFDM-Based VLC Systems
| Autor: | Yaseein Soubhi Hussein, Ridha Touhami, Ayad Atiyah Abdulkafi, Mohamad Yusoff Alias, Djamal Slimani |
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| Rok vydání: | 2020 |
| Předmět: |
Orthogonal frequency-division multiplexing
Computer science Optical communication 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics Signal Multiplexing Atomic and Molecular Physics and Optics Reduction (complexity) 020210 optoelectronics & photonics Modulation 0202 electrical engineering electronic engineering information engineering Electronic engineering Radio frequency Electrical and Electronic Engineering Envelope (mathematics) |
| Zdroj: | Journal of Optical Communications. |
| ISSN: | 2191-6322 0173-4911 |
| DOI: | 10.1515/joc-2019-0273 |
| Popis: | Orthogonal frequency-division multiplexing technique (OFDM) has been adopted widely as a modulation technique for radio frequency (RF) and optical communication systems such as visible-light communication (VLC) due to its high spectral efficiency and low-complexity implementation. VLC-OFDM is recommended in 5 G mobile communication. However, VLC-OFDM suffer from the high peak to-average power ratio (PAPR). In this paper, a modified selective mapping (MSLM) method is applied to the proposed system followed by a new envelope scaling process for further reductions in PAPR of VLC-OFDM system. Simulation results show that the proposed method reduces the PAPR by about 6.8 and 1.7 dB comparing with the original signal and the traditional SLM with a number of rotation vector U = 8, respectively. |
| Databáze: | OpenAIRE |
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