کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449318 | 1512526 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
VLC-beacon detection with an under-sampled ambient light sensor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: VLC-beacon detection with an under-sampled ambient light sensor VLC-beacon detection with an under-sampled ambient light sensor](/preview/png/5449318.png)
چکیده انگلیسی
LEDs will replace in a near future the current worldwide lighting mainly due to their low production-cost and energy-saving assets. Visible light communications (VLC) will turn gradually the existing lighting network into a communication network. Nowadays VLC transceivers can be found in some commercial centres in Europe; some of them broadcast continuously an identification tag that contains its coordinate position. In such a case, the transceiver acts as a geolocation beacon. Nevertheless, mobile transceivers represent a challenge in the VLC communication chain, as smartphones have not integrated yet a VLC customized detection stage. In order to make current smartphones capable to detect VLC broadcasted signals, their Ambient Light Sensor (ALS) is adapted as a VLC detector. For this to be achieved, lighting transceivers need to adapt their modulation scheme. For instance, frequencies representing start bit, 1, and 0 logic values can be set to avoid flicker from illumination and to permit detecting the under-sampled signal. Decoding the signal requires a multiple steps real-time signal processing as shown here.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 397, 15 August 2017, Pages 122-128
Journal: Optics Communications - Volume 397, 15 August 2017, Pages 122-128
نویسندگان
Jacob Green, Huetzin Pérez-Olivas, Saúl MartÃnez-DÃaz, Jorge GarcÃa-Márquez, Carlos DomÃnguez-González, Raúl Santiago-Montero, Hongyu Guan, Marc Rozenblat, Suat Topsu,