Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/47019
Title: Cyclic code-shift extension keying for multi-user optical wireless communications
Authors: Martín-González, J. A.
Guerra-Medina, M. F.
López-Hernández, F. J.
Delgado-Rajó, F. A. 
Gonzalez, O. 
UNESCO Clasification: 3307 Tecnología electrónica
Keywords: Visible-Light Communications
Multiple-Access
Networks
Systems
Issue Date: 2015
Publisher: 0013-5194
Journal: Electronics letters 
Abstract: 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 biterror 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.
URI: http://hdl.handle.net/10553/47019
ISSN: 0013-5194
DOI: 10.1049/el.2014.4417
Source: Electronics Letters[ISSN 0013-5194],v. 51, p. 847-849
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