Abstract
In this paper, we experimentally compare orthogonal frequency-division multiplexing (OFDM) and on-off keying (OOK) modulation in the context of the IEEE 802.15.13-2023 standard at bandwidths up to 50 MHz across a Li-Fi link with distances up to 5 m and a lateral offset up to 51°. Error vector magnitude (EVM) and bit error rate (BER) evaluations confirm that the high peak-to-average power ratio (PAPR) of OFDM limits the achievable transmission distance, but it offers higher data rates due to its higher spectral efficiency. Due to the lower PAPR, OOK-based Pulsed Modulation PHY (PM-PHY) shows a significantly higher link range. As the structure of the PM-PHY is based on OFDM symbols, the two solutions may also be combined to open a wider range of use cases for optical wireless communications.
Original language | English |
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Title of host publication | 2023 South American Conference On Visible Light Communications (SACVLC) |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 124-129 |
Number of pages | 6 |
ISBN (Electronic) | 979-8-3503-5860-5 |
ISBN (Print) | 9798350358605 |
DOIs | |
Publication status | Published - 12 Dec 2023 |
Event | 2023 South American Conference On Visible Light Communications (SACVLC) - Santiago, Chile Duration: 8 Nov 2023 → 10 Nov 2023 |
Conference
Conference | 2023 South American Conference On Visible Light Communications (SACVLC) |
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Period | 8/11/23 → 10/11/23 |
Keywords
- optical wireless communications
- OFDM
- bit error rate
- symbols
- peak to average power ratio
- adaptive optics
- pulsed modulation