RT info:eu-repo/semantics/conferenceObject T1 Sistema OCDMA para comunicaciones en el espectro visible basado en códigos ópticos aleatorios A1 Rojas Guillama, Borja A1 Guerra Medina, Marcos Fulgencio A1 González Hernández, Oswaldo A1 Martín González, Jesús Ángel A1 Delgado Rajó, Francisco Alberto A1 Rodríguez Pérez, Silvestre K1 Telecomunicaciones K1 Telecommunication K1 Radio AB 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. YR 2011 FD 2011-09 LK http://hdl.handle.net/10259/9748 UL http://hdl.handle.net/10259/9748 LA spa NO Comunicación presentada en: XXVI Simposium Nacional de la Unión Científica Internacional de Radio (URSI). En Leganés (Spain), 6-9 septiembre 2011 NO Este trabajo ha sido financiado por el Gobierno de Canarias (SolSubC200801000306), el Plan Nacional del Ministerio de Ciencia e Innovacion (TEC2009-14059-C03-02 y TEC2009-14059-C03-03) y el Plan E para la estimulacion de la economıa y el empleo. DS Repositorio Institucional de la Universidad de Burgos RD 04-dic-2024