Earticle

초록

영어

High power white LEDs are expected to replace the existing lighting technologies in near future which are also suggested for visible light communication (VLC). We proposed an algorithm for high precision indoor positioning using lighting LEDs, VLC and image sensors. In the proposed algorithm, four LEDs transmitted their three-dimensional coordinate information which were received and demodulated by two image sensors near the unknown position. The unknown position was then calculated from the geometrical relations of the LED images created on the image sensors. We described the algorithm in details. Simulation of the proposed algorithm was done and presented in this paper. This technique did not require any angular measurement which was needed in contemporary positioning algorithms using LED and image sensor. Simulation results showed that the proposed system could estimate the unknown position within the accuracy of few centimeters. Positioning accuracy could be increased by using high resolution image sensors or by increasing the separation between the image sensors.

목차

Abstract
 1. Introduction
 2. Background
 3. Proposed Algorithm
 4. Position Estimation
  4.1 Least Square Estimation
  4.2 Vector Estimation
 5. Simulations and Results
  5.1. Simulation Setup
  5.2. Least Square Estimation Results
  5.3. Vector Estimation Results
  5.4. Influence of Lens Distance on Positioning Error
  5.5. Influence of Focal Length on Positioning Error
 6. Discussion
  6.1. Limitations
  6.2. Comparison with Other Technologies
 7. Conclusion
 References

키워드

저자

• Mohammad Shaifur Rahman [ Dept. of Electrical and Electronic Engineering Khulna University of Engineering & Technology, Bangladesh ]
• Ki-Doo Kim [ Department of Electronics Engineering, Kookmin University, Seoul, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605