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Title: Cyclic code-shift extension keying for multi-user optical wireless communications
Authors: González, Oswaldo
Martín-González, Jesús Ángel
Guerra-Medina, Marcos F.
López Hernández, Francisco José
Delgado-Rajó, Francisco A.
Keywords: Optical transmitters;Code division multiple access;Cyclic codes;Error statistics
Issue Date: May-2015
Publisher: Institution of Engineering and Technology (IET)
Citation: Electronics Letters, 2015, 51 (11), 847-849
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 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.
ISSN: 0013-5194
DOI: 10.1049/el.2014.4417
Type: Article
Appears in Collections:Otros trabajos de campo y actividades científicas

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