{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T18:55:37Z","timestamp":1773168937204,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,2,8]],"date-time":"2020-02-08T00:00:00Z","timestamp":1581120000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Romanian Ministry of Research and Innovation, CCCDI - UEFISCDI","award":["18PFE\/16.10.2018"],"award-info":[{"award-number":["18PFE\/16.10.2018"]}]},{"name":"Romanian Ministry of Research and Innovation","award":["PN-III-P1-1.2-PCCDI-2017-0917, contract 21 PCCDI\/2018"],"award-info":[{"award-number":["PN-III-P1-1.2-PCCDI-2017-0917, contract 21 PCCDI\/2018"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The usage of Visible Light Communications (VLC) technology in automotive applications is very promising. Nevertheless, in outdoor conditions, the performances of existing VLC systems are strongly affected by the sun or other sources of light. In such situations, the strong parasitic light can saturate the photosensitive element and block data communication. To address the issue, this article analyzes the usage of an adaptive logarithmic transimpedance circuit as an alternative to the classical linear transimpedance circuit. The simulation and experimental evaluation demonstrate benefits of the proposed technique, as it significantly expands the communication distance and optical noise functionality range of the VLC systems and reduces the possibility of photoelement saturation. As a result, this approach might enable outdoor VLC sensors to work in strong sun conditions, the experimental results confirming its validity not only in the laboratory but also in outdoor conditions. A reliable 50 m communication distance is reported for outdoor sunny conditions using a standard power traffic light VLC emitter and a PIN photodiode VLC sensor.<\/jats:p>","DOI":"10.3390\/s20030909","type":"journal-article","created":{"date-parts":[[2020,2,10]],"date-time":"2020-02-10T11:48:51Z","timestamp":1581335331000},"page":"909","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Noise Resilient Outdoor Traffic Light Visible Light Communications System Based on Logarithmic Transimpedance Circuit: Experimental Demonstration of a 50 m Reliable Link in Direct Sun Exposure"],"prefix":"10.3390","volume":"20","author":[{"given":"Sebastian Andrei","family":"Av\u0103t\u0103m\u0103ni\u021bei","sequence":"first","affiliation":[{"name":"Integrated Center for research, development and innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for fabrication and control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"},{"name":"Department of Computers, Electronics and Automation, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2200-6775","authenticated-orcid":false,"given":"Alin-Mihai","family":"C\u0103ilean","sequence":"additional","affiliation":[{"name":"Integrated Center for research, development and innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for fabrication and control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"},{"name":"Department of Computers, Electronics and Automation, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adrian","family":"Done","sequence":"additional","affiliation":[{"name":"Integrated Center for research, development and innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for fabrication and control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"},{"name":"Department of Computers, Electronics and Automation, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mihai","family":"Dimian","sequence":"additional","affiliation":[{"name":"Integrated Center for research, development and innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for fabrication and control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"},{"name":"Department of Computers, Electronics and Automation, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5831-721X","authenticated-orcid":false,"given":"Marius","family":"Prelipceanu","sequence":"additional","affiliation":[{"name":"Integrated Center for research, development and innovation in Advanced Materials, Nanotechnologies, and Distributed Systems for fabrication and control, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"},{"name":"Department of Computers, Electronics and Automation, Stefan cel Mare University of Suceava, 720229 Suceava, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Pe\u0161ek, P., Zvanovec, S., Chvojka, P., Bhatnagar, M.R., Ghassemlooy, Z., and Saxena, P. 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