Abstract
Visible light communication (VLC) can achieve high data rate transmission with discrete multitone (DMT) systems. A DMT variant is pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) which offers an energy-efficient modulation solution for VLC. However, similar to other DMT modulation techniques, PAM-DMT suffers from a high peak-to-average power ratio (PAPR). In this paper, the efficacy of pilot-assisted (PA) PAPR reduction system in PAM-DMT based VLC is demonstrated experimentally. Wavelength division multiplexing (WDM) is applied using three low-cost light emitting diodes (LEDs). The available modulation bandwidth of each light source is utilised by adaptive bit and power loading. PA PAM-DMT is compared in this work to PAM-DMT based on achievable data rate and Bit Error Rate (BER). The proposed system reduces the clipping noise and minimises the nonlinear distortion of the system by reducing the high PAPR of each wavelength. Thus, the PA PAM-DMT has achieved 8% higher data rate than the conventional PAM-DMT with no PAPR reduction.
Original language | English |
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Title of host publication | 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) |
Publisher | IEEE |
Pages | 174-178 |
Number of pages | 5 |
ISBN (Electronic) | 9781665410441 |
ISBN (Print) | 9781665410458 |
DOIs | |
Publication status | Published - 6 Oct 2022 |
Event | 13th International Symposium on Communication Systems, Networks and Digital Signal Processing - Dr. António Cupertino de Miranda Centro de Congressos, Porto, Portugal Duration: 20 Jul 2022 → 22 Jul 2022 https://csndsp2022.av.it.pt/ (Link to conference website) |
Publication series
Name | 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022 |
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ISSN (Print) | None |
Conference
Conference | 13th International Symposium on Communication Systems, Networks and Digital Signal Processing |
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Abbreviated title | CSNDSP 2022 |
Country/Territory | Portugal |
City | Porto |
Period | 20/07/22 → 22/07/22 |
Internet address |
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Keywords
- optical OFDM
- optical wireless communication
- visible light communication
- pulse-amplitude-modulated discrete multitone modulation PAM-DMT
- peak-to-average power ratio PAPR
- pilot-assisted PA
- wavelength division multiplexing WDM
- Pulse-amplitude-modulated discrete multitone modulation PAM-DMT
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Signal Processing
- Instrumentation
- Atomic and Molecular Physics, and Optics
- Computer Networks and Communications