Visible light communication with LED traffic lights using 2-dimensional image sensor

Haswani Binti Che Wook, Shinichiro Haruyama, Masao Nakagawa

Research output: Contribution to journalReview article

36 Citations (Scopus)

Abstract

We propose a new receiving method for an information-providing system that uses LED-based traffic lights as the transmitter. We analyzed the improvements obtained when 2-dimentional image sensor replaced the conventional single-element photodiode. First, we discuss the maximum receiver's field of view (FOV) when using the 2-dimentional image sensor at a particular focal length. We analyzed the best vertical inclination for both lanes and quantified the improvements in terms of the enhancement of received signal-noise ratio (SNR) when different numbers of pixels were applied. Our results indicate that using more pixels increases the received SNR and the service area becomes wider compared to the conventional single-element system. Consequently, receivable information within the service area also increased. We also found that the optimum number of pixels to accomplish a reliable communication system is 50 × 50 because performance degradation occured with a larger number of pixels.

Original languageEnglish
Pages (from-to)654-659
Number of pages6
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE89-A
Issue number3
DOIs
Publication statusPublished - 2006 Jan 1

Keywords

  • 2-dimensional image sensor
  • LED traffic lights
  • Traffic information system
  • Visible lights communications

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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