2026-05-06T09:21:34Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/97482024-11-30T01:05:20Zcom_10259_9737com_10259_5086com_10259_2604col_10259_9738

Rojas Guillama, Borja Guerra Medina, Marcos Fulgencio González Hernández, Oswaldo Martín González, Jesús Ángel Delgado Rajó, Francisco Alberto Rodríguez Pérez, Silvestre 2024-11-29T12:00:15Z 2024-11-29T12:00:15Z 2011-09 http://hdl.handle.net/10259/9748 Comunicación presentada en: XXVI Simposium Nacional de la Unión Científica Internacional de Radio (URSI). En Leganés (Spain), 6-9 septiembre 2011 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. 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. application/pdf spa Telecomunicaciones Radio Telecommunication Sistema OCDMA para comunicaciones en el espectro visible basado en códigos ópticos aleatorios info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess