Indoor visible communication utilizing plural white LEDs as lighting

Author

TANAKA, Yuichi ; Komine, Toshihiko ; Haruyama, Shinichiro ; Nakagawa, Masao

Author_Institution

Dept. of Electr. Eng., Keio Univ., Kanagawa, Japan

Volume

2

fYear

2001

fDate

Sep/Oct 2001

Abstract

Future electric lights will be composed of white LED (light emitting diodes). Indoor wireless optical communication systems utilizing white LED lights have been proposed in our laboratory and we have been studying it. Generally, plural lights are installed in our room. Therefore, their optical path difference must be considered. In this paper, the influence of optical path difference has been investigated and two approaches for this problem are introduced. One uses OOK-RZ (on-off keying, return-to-zero) coding and the other uses optical OFDM (orthogonal frequency division multiplexing). From the results of computer simulations, we have found that these approaches are feasible for wireless optical communication systems utilizing white LED lights

Keywords

OFDM modulation; codes; light emitting diodes; lighting; optical links; OOK-RZ coding; indoor visible communication; indoor wireless optical communication; light emitting diodes; lighting; on-off keying return-to-zero coding; optical OFDM; optical path difference; orthogonal frequency division multiplexing; plural white LED; Computer simulation; High speed optical techniques; LED lamps; Light emitting diodes; OFDM; Optical communication equipment; Optical fiber communication; Optical mixing; Stimulated emission; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-7244-1

Type

conf

DOI

10.1109/PIMRC.2001.965300

Filename

965300