2026-05-06T10:38:36Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/97462024-11-30T01:05:19Zcom_10259_9737com_10259_5086com_10259_2604col_10259_9738

Martín González, Jesús Ángel 925 600 González Hernández, Oswaldo d2e1e3e3-c78d-4c15-b5dd-d1db3dc942cb 600 Poves Valdés, Enrique 14374200-45ce-4806-aa32-12aac86d41f6 600 López Hernández, Francisco José d579b379-446f-4d9c-aa23-bff2a29984ea 600 Rodríguez Pérez, Silvestre 4116a87b-60f3-497d-b986-53378b93eec1 600 2024-11-29T09:37:50Z 2024-11-29T09:37:50Z 2010-09 http://hdl.handle.net/10259/9746 Comunicación presentada en: XXV Simposium Nacional de la Unión Científica Internacional de Radio (URSI). En Bilbao (Spain), 15-17 septiembre 2010 In this paper, a technique for code acquisition in optical code-division multiple-access (OCDMA) systems using the recently introduced Random Optical Codes (ROCs) is presented. The acquisition scheme, which is based on the transmission of a synchronization preamble, is described. This scheme is a modification of another one previously presented [1], where the phenomenon which we have called “auto-collision” is now resolved. The equations that allow us to establish an upper bound for the acquisition performance are indicated and several results which prove the reliability of these expressions are presented. These results show that the acquisition scheme is practically infallible when the synchronization preamble is constituted by three or four bits, irrespective of the multi-user interference, then making it very appropriate for optical communications over very saturated scenarios (with a large number of users). Este trabajo ha sido apoyado por la European Space Agency (ESA, proyecto “Optical Wireless Intra-Spacecraft Communication”, ESA Contract 19545/06/NL/GLC), el Plan Nacional del Ministerio de Ciencia e Innovacion (TEC2009-14059-C03) ´ y el Gobierno de Canarias (SolSubC200801000306). application/pdf spa Telecomunicaciones Radio Telecommunication Esquema de sincronismo para sistemas OCDMA basado en códigos ópticos aleatorios info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess THUMBNAIL Martin-URSI_2010.pdf.jpg Martin-URSI_2010.pdf.jpg IM Thumbnail image/jpeg 4264 https://riubu.ubu.es/bitstream/10259/9746/3/Martin-URSI_2010.pdf.jpg a20b241a13c0d06b7c4f8be65a1730b2 MD5 3 LICENSE license.txt license.txt text/plain; charset=utf-8 1362 https://riubu.ubu.es/bitstream/10259/9746/2/license.txt 5d013bfa6e473ff0db22cd82a4d71a70 MD5 2 ORIGINAL Martin-URSI_2010.pdf Martin-URSI_2010.pdf application/pdf 198943 https://riubu.ubu.es/bitstream/10259/9746/1/Martin-URSI_2010.pdf ef582c233d5f38e4869ea32e4bb82f62 MD5 1 10259/9746 oai:riubu.ubu.es:10259/9746 2024-11-30 02:05:19.695 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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