Experimental optical code-division multiple access system for visible light communications

Author

Guerra-Medina, Marcos F. ; Rojas-Guillama, Borja ; González, Oswaldo ; Martín-González, Jesús A. ; Poves, Enrique ; López-Hernández, Francisco J.

Author_Institution

Dept. Fundamental & Exp. Phys., Electron. & Syst., Univ. of La Laguna, La Laguna, Spain

fYear

2011

fDate

13-15 April 2011

Firstpage

1

Lastpage

6

Abstract

An optical code-division multiple access system (OCDMA) is presented for visible light communications (VLC). The OCDMA scheme is based on the recently proposed random optical codes (ROC), which do not present optimal correlation properties but are characterized by their ease of generation when large number of simultaneous users are considered. The synchronism mechanism when using ROCs is an important issue which is adequately addressed and solved by the designed system. An experimental prototype has been developed which allows us to transmit medium-quality audio data from several emitting sources simultaneously through different channels (using different codes), obtaining a practically error-free reception (imperceptible by the human ear) which perfectly agrees with the theoretical analysis.

Keywords

code division multiple access; optical communication; reception; error free reception; medium quality audio data; optical code division multiple access system; optimal correlation properties; random optical codes; synchronism mechanism; visible light communications; Adaptive optics; Bit error rate; Optical pulses; Optical receivers; Optical transmitters; Synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Telecommunications Symposium (WTS), 2011

Conference_Location

New York City, NY

ISSN

1934-5070

Print_ISBN

978-1-4577-0162-7

Type

conf

DOI

10.1109/WTS.2011.5960840

Filename

5960840