کنفرانس مهندسی برق ایران

صفحه اصلی / بیست و نهمین کنفرانس مهندسی برق ایران

Large Scale Indoor VLC Positioning Using Image Sensor with Limited Field of View

نویسندگان :

Arezoo Kabiri¹ Foroogh Sadat Tabataba²

1- دانشگاه صنعتی اصفهان 2- دانشگاه صنعتی اصفهان

کلمات کلیدی :

Angle difference of arrival‎, ‎large scale environment‎, ‎indoor positioning‎, ‎image processing‎, ‎visible light communication.

چکیده :

As global positioning system (GPS) has failed in indoor environments‎, ‎numerous technologies are proposed to obtain better indoor positioning system performance‎. ‎One of these technologies is based on visible light communication (VLC)‎, ‎which has become popular due to its benefits‎. ‎This technique has shown significant advantages, including cost efficiency‎, long lifetime and good environmental friendliness‎. ‎In this paper‎, ‎we use VLC positioning based on the angle difference of arrival (ADOA) to estimate the position of people or devices in a large scale indoor environment using least square method. ‎Two different placements for light-emitting diodes (LEDs) are considered. Assuming practical limited field of view (FOV) for the user's camera, part of LEDs in the image plane can be observed. Thus, we propose a simple method to find the position of users using the cross-correlation between the reference images and the user image. This approach reduces the search region. Simulation results show that, this method can achieve an average error of ‎‎32‎ ‎cm in a ‎12m⨯12m⨯5.5m‎‎ space in a 4X-shape LED placement, ‎and ‎in a ‎checkered LED placement the average error is about ‎‎38‎ ‎cm in a same size room.