2026-04-19T06:46:25Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/104492025-05-10T00:05:14Zcom_10259_9737com_10259_5086com_10259_2604col_10259_10448

González Hernández, Oswaldo d2e1e3e3-c78d-4c15-b5dd-d1db3dc942cb 600 Martín González, Jesús Ángel 925 600 Guerra Medina, Marcos Fulgencio 31a8e2f9-931f-40f2-ae46-a58df59f59e3 600 López Hernández, Francisco José d579b379-446f-4d9c-aa23-bff2a29984ea 600 Delgado Rajó, Francisco Alberto c389da7a-e0c8-40ce-8b98-db71dc6e9299 600 2025-05-09T07:46:34Z 2025-05-09T07:46:34Z 2015-05 0013-5194 http://hdl.handle.net/10259/10449 10.1049/el.2014.4417 1350-911X An optical code-division multiple access (OCDMA) scheme based on cyclic shift extension of a base code is proposed to enable asynchronous multi-user optical wireless communications for very populated scenarios. This multiple access method is convenient for low–medium data rate communications of a large number of simultaneous transmitters. An expression to obtain a tight upper bound of the bit-error probability of the new scheme is provided which is also confirmed by experimental results. A variant of the proposed communication method which allows the encoding of several bits per symbol is also presented, although its analysis demonstrates that the first simpler strategy reaches similar performance with a significantly lower receiver complexity. This work has been supported by the SpanishGovernment (MINECO) and the European Regional DevelopmentFund (ERDF/FEDER) programme under projects TEC2013-47682-C2-2-P and TEC2013-47682-C2-1-P. application/pdf eng The Institution Of Engineering and Technology Electronic Letters. 2015, V. 52, n. 11, p. 847-849 https://doi.org/10.1049/el.2014.4417 Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ info:eu-repo/semantics/openAccess Telecomunicaciones Telecommunication Cyclic code‐shift extension keying for multi‐user optical wireless communications info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Electronics Letters 51 11 847 849 THUMBNAIL González-Electronic_Letters_2015.pdf.jpg González-Electronic_Letters_2015.pdf.jpg IM Thumbnail image/jpeg 4179 https://riubu.ubu.es/bitstream/10259/10449/4/Gonz%c3%a1lez-Electronic_Letters_2015.pdf.jpg 01370850ab28988bfb68915b83767efc MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 1362 https://riubu.ubu.es/bitstream/10259/10449/3/license.txt 5d013bfa6e473ff0db22cd82a4d71a70 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/10449/2/license_rdf f9a6a4096bf314846151c97900b2090d MD5 2 ORIGINAL González-Electronic_Letters_2015.pdf González-Electronic_Letters_2015.pdf application/pdf 247196 https://riubu.ubu.es/bitstream/10259/10449/1/Gonz%c3%a1lez-Electronic_Letters_2015.pdf be90aedcd850d28cfafcb3779136bbe6 MD5 1 10259/10449 oai:riubu.ubu.es:10259/10449 2025-05-10 02:05:14.294 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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