Abstract
Pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) offers an energy-efficient modulation solution for optical wireless communication systems. However, similar to other multicarrier modulation (MCM) techniques, PAM-DMT suffers from a high peak-to-average power ratio (PAPR). This paper experimentally demonstrates the efficacy of pilot-assisted (PA) PAPR reduction system in PAM-DMT based visible light communication (VLC) systems. PA PAM-DMT is compared in this manuscript to PAM-DMT based on Bit Error Rate (BER), Signal-to-Noise Ratio (SNR) and PAPR. A gain of 2.75 dB is achieved using 10 pilot iterations for 8-PAM.The BER performance of the PA PAM-DMT is better than that of the conventional PAM-DMT with a reduced PAPR. The proposed system allows for higher input signal swing levels while minimising the non-linearity effects that result from operating beyond Light Emitting Diode’s (LED’s) dynamic range.
| Original language | English |
|---|---|
| Title of host publication | 2021 IEEE Latin-American Conference on Communications (LATINCOM) |
| Editors | Ramiro Velazquez |
| Publisher | IEEE |
| Number of pages | 6 |
| ISBN (Electronic) | 9781665440356 |
| ISBN (Print) | 9781665440363 |
| DOIs | |
| Publication status | Published - 23 Dec 2021 |
| Event | IEEE Latin-American Conference on Communications - Centro INDOTEL Cultura Digital (& Online), Santo Domingo, Dominican Republic Duration: 17 Nov 2021 → 19 Nov 2021 https://latincom2021.ieee-latincom.org/ (Link to conference webiste) |
Publication series
| Name | |
|---|---|
| ISSN (Print) | 2330-989X |
Conference
| Conference | IEEE Latin-American Conference on Communications |
|---|---|
| Abbreviated title | IEEE LATINCOM 2021 |
| Country/Territory | Dominican Republic |
| City | Santo Domingo |
| Period | 17/11/21 → 19/11/21 |
| Internet address |
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Keywords
- PAM-DMT
- optical OFDM
- optical wireless communication
- visible light communication
- peak-to-average power ratio PAPR
- pilot-assisted PA
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Signal Processing
- Computer Networks and Communications
Documents and Links
- Alrakah, H. et al (2021) Pilot-assisted PAPR reduction in PAM-DMT based visible light communication systems
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