{"title":"Impact of wavelength dependency of LED and photodiode in visible light positioning","authors":"Kevin Verniers, L. Perre, N. Stevens","doi":"10.1109/WPMC.2017.8301811","DOIUrl":null,"url":null,"abstract":"The wavelength dependency of LEDs and photodiodes in RSS-based Visible Light Positioning systems is sometimes omitted in the calculations. This study investigates the consequences on the accuracy of this approach. A simulation-based assessment is performed, where a single link is considered. The received signal strength is used to estimate the distance between LED and photo-diode. Results are obtained for different phosphor coated LEDs and photodiodes. It is shown that neglecting the wavelength dependency results in distance estimation errors in the order of 10 %. This severe degradation would undermine the achievable accuracy of VLP systems (order of centimeters). The result shows that regardless the used photodiode, LEDs with a high correlated color temperature are more prone to distance estimation errors in comparison with low correlated color temperature LEDs.","PeriodicalId":239243,"journal":{"name":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 20th International Symposium on Wireless Personal Multimedia Communications (WPMC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WPMC.2017.8301811","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The wavelength dependency of LEDs and photodiodes in RSS-based Visible Light Positioning systems is sometimes omitted in the calculations. This study investigates the consequences on the accuracy of this approach. A simulation-based assessment is performed, where a single link is considered. The received signal strength is used to estimate the distance between LED and photo-diode. Results are obtained for different phosphor coated LEDs and photodiodes. It is shown that neglecting the wavelength dependency results in distance estimation errors in the order of 10 %. This severe degradation would undermine the achievable accuracy of VLP systems (order of centimeters). The result shows that regardless the used photodiode, LEDs with a high correlated color temperature are more prone to distance estimation errors in comparison with low correlated color temperature LEDs.