STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Telecommunication, Switching Systems and Networks

Visible Light Communication System with Various OFDM Signaling Techniques for IM/DD Channels

  1. Shally Gujral
  2. Monika Tuteja
  3. Kamajiit Bhatia
  4. Harjitpal Singh

Abstract

Lightening using light emitting diodes is very energy efficient method for illumination. This type of communication is known as visible light communication. Further, with the use of OFDM technique, multiuser communication is also possible in VLC. But the problem with OFDM is that it has both positive and negative amplitude, due to which it is not preferable for direct detection channels. For making it worthy for VLC in all manners, various techniques have been suggested like Dc-biased OFDM, asymmetrically clipped optical OFDM, pulse amplitude modulated discrete multi-tone OFDM.

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