Bi-orthogonal Symbol Mapping and Detection in Optical CDMA Communication System

In this paper, the bi-orthogonal symbol mapping and detection scheme is investigated in time-spreading wavelength-hopping optical CDMA communication system. The carrier-hopping prime code is exploited as signature sequence, whose put-of-phase autocorrelation is zero. Based on the orthogonality of ca...

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Bibliographic Details
Published inJournal of optical communications Vol. 39; no. 1; pp. 43 - 48
Main Author Liu, Maw-Yang
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 20.12.2017
Walter de Gruyter GmbH
Subjects
bi-orthogonal symbol mapping/detection
Binary data
carrier-hopping prime code
Communications systems
Mapping
Maximum likelihood decoding
optical CDMA
Orthogonality
Signaling
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Summary:In this paper, the bi-orthogonal symbol mapping and detection scheme is investigated in time-spreading wavelength-hopping optical CDMA communication system. The carrier-hopping prime code is exploited as signature sequence, whose put-of-phase autocorrelation is zero. Based on the orthogonality of carrier-hopping prime code, the equal weight orthogonal signaling scheme can be constructed, and the proposed scheme using bi-orthogonal symbol mapping and detection can be developed. The transmitted binary data bits are mapped into corresponding bi-orthogonal symbols, where the orthogonal matrix code and its complement are utilized. In the receiver, the received bi-orthogonal data symbol is fed into the maximum likelihood decoder for detection. Under such symbol mapping and detection, the proposed scheme can greatly enlarge the Euclidean distance; hence, the system performance can be drastically improved.
ISSN:0173-4911
2191-6322
DOI:10.1515/joc-2016-0088