센서학회지 (Journal of Sensor Science and Technology)

  • 제24권5호
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  • Pages.342-347
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  • 2015
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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An Indoor Broadcasting System Using Light-Emitting Diode Lamps Coupled with Power Line

  • Lee, Seong-Ho (Department of Electronics & IT Media Engineering, Seoul National University of Science and Technology)
  • 투고 : 2015.07.06
  • 심사 : 2015.09.17
  • 발행 : 2015.09.30
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초록

We introduce an indoor broadcasting system using light-emitting diode (LED) lamps coupled with a 220 V power line. Two couplers connected to the power line constitute a power line communication (PLC) link. The transmission path from an LED lamp to a photodetector forms a visible light communication (VLC) link in free space. When the LED lamp is coupled to the power line, a composite PLC-VLC link is formed, making it possible to transmit a VLC signal beyond line-of-sight. In experiments, a 4 kHz analog signal modulated with a 100 kHz carrier was sent to the power line by a PLC coupler, and LED lamps coupled to the power line detected the signal and radiated it to multiple VLC receivers in the room. This configuration is useful in expanding an indoor VLC sensor network to adjacent rooms or constructing a voice broadcasting system in a building or apartments with existing power lines.

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참고문헌

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피인용 문헌

  1. A Visible Light Communication Repeater Using an LED Lamp vol.25, pp.3, 2016, https://doi.org/10.5369/JSST.2016.25.3.189