Publication
Optical digital to analog conversion performance analysis for indoor set-up conditions
| dc.contributor.author | Dobesch, Aleš | |
| dc.contributor.author | Alves, Luis Nero | |
| dc.contributor.author | Wilfert, Otakar | |
| dc.contributor.author | Ribeiro, Carlos Gaspar | |
| dc.date.accessioned | 2025-06-17T12:54:50Z | |
| dc.date.available | 2025-06-17T12:54:50Z | |
| dc.date.issued | 2017-10 | |
| dc.description.abstract | In visible light communication (VLC) the optical digital to analog conversion (ODAC) approach was proposed as a suitable driving technique able to overcome light-emitting diode’s (LED) non-linear characteristic. This concept is analogous to an electrical digital-to-analog converter (EDAC). In other words, digital bits are binary weighted to represent an analog signal. The method supports elementary on–off based modulations able to exploit the essence of LED’s non-linear characteristic allowing simultaneous lighting and communication. In the ODAC concept the reconstruction error does not simply rely upon the converter bit depth as in case of EDAC. It rather depends on communication system set-up and geometrical relation between emitter and receiver as well. The paper describes simulation results presenting the ODAC’s error performance taking into account: the optical channel, the LED’s half power angle (HPA) and the receiver field of view (FOV). The set-up under consideration examines indoor conditions for a square room with 4 m length and 3 m height, operating with one dominant wavelength (blue) and having walls with a reflection coefficient of 0.8. The achieved results reveal that reconstruction error increases for higher data rates as a result of interference due to multipath propagation. | eng |
| dc.description.sponsorship | try of Education in the frame of the National Sustainability Program under grant LO1401. For research, infrastructure of the SIX Research Centre was used. The work of Carlos Ribeiro was financially supported by FCT/MEC and its funding program under the postdoctoral grant SFRH/BPD/104212/2014. | |
| dc.identifier.citation | Aleš Dobesch, Luis Nero Alves, Otakar Wilfert, Carlos Gaspar Ribeiro, Optical digital to analog conversion performance analysis for indoor set-up conditions, Optics Communications, Volume 400, 2017, Pages 115-122, ISSN 0030-4018, https://doi.org/10.1016/j.optcom.2017.05.021 | |
| dc.identifier.doi | 10.1016/j.optcom.2017.05.021 | |
| dc.identifier.issn | 0030-4018 | |
| dc.identifier.uri | http://hdl.handle.net/10400.8/13292 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | |
| dc.publisher | Elsevier BV | |
| dc.relation | Evolving LTE-Advanced to meet MTC requirements | |
| dc.relation.hasversion | https://www.sciencedirect.com/science/article/pii/S0030401817303929 | |
| dc.relation.ispartof | Optics Communications | |
| dc.rights.uri | N/A | |
| dc.subject | LED | |
| dc.subject | VLC | |
| dc.subject | ODAC | |
| dc.subject | Optical channel | |
| dc.title | Optical digital to analog conversion performance analysis for indoor set-up conditions | eng |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Evolving LTE-Advanced to meet MTC requirements | |
| oaire.awardURI | http://hdl.handle.net/10400.8/13082 | |
| oaire.citation.endPage | 122 | |
| oaire.citation.startPage | 115 | |
| oaire.citation.title | Optics Communications | |
| oaire.citation.volume | 400 | |
| oaire.fundingStream | OE | |
| oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| relation.isProjectOfPublication | 455c86be-5fbe-4704-946d-f7e9717b10b6 | |
| relation.isProjectOfPublication.latestForDiscovery | 455c86be-5fbe-4704-946d-f7e9717b10b6 |