Experimental investigation of modulation method for visible-light communications

Hidemitsu Sugiyama, Shinichiro Haruyama, Masao Nakagawa

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


We have developed a new modulation method - inverted pulse position modulation (I-PPM) and subcarrier inverted pulse position modulation (SC-I-PPM) - that provides superior LED brightness for visible-light communications. In addition, the new modulation method SC-I-PPM is not affected by background light. In this paper, we investigated several modulation methods in details and set up a standard with which to evaluate the performance of modulation methods. Several modulation methods are subjected to experiments to clarify their performance. Experiments show that subcarrier modulation suppresses the influence of background light and that our new modulation best maintains LED brightest.

Original languageEnglish
Pages (from-to)3393-3400
Number of pages8
JournalIEICE Transactions on Communications
Issue number12
Publication statusPublished - 2006 Dec


  • LED
  • Modulation
  • Optical wireless communication
  • PPM
  • Visible-light communication

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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