Authors:
Arash Yazdani
1
;
Morteza Noshad
2
;
Hojat Jaliloghli
3
;
Amirhossein Jaliloghli
3
and
Mohammad Noshad
4
Affiliations:
1
Islamic Azad University of Noor and Universidad Politecnica de Catalunya, Iran, Islamic Republic of
;
2
University of Tabriz, Iran, Islamic Republic of
;
3
Islamic Azad University of Tabriz, Iran, Islamic Republic of
;
4
University of Virginia, United States
Keyword(s):
Optical fiber code division multiple access, Spectral phase encoding, Optical domain multiuser interference detection, Temporal multiuser interference estimation, Nonlinear multiuser interference estimation.
Related
Ontology
Subjects/Areas/Topics:
Optical Communication Systems
;
Optical Networks Performance Modeling
;
Telecommunications
Abstract:
In this paper, an effective technique for reducing the multi-user interference (MUI) in spectrally-phase encoded optical code division multiple access (SPE-OCDMA) systems has been proposed. In this method the effect of MUI signal on the main user’s signal has been decreased using multiuser interference detection (MID). Two structures have been introduced for accomplishing MID and degrading its destructive effect on the decoded ultra-short light pulse; temporal multiuser interference estimation (TMIE) and nonlinear multiuser interference estimation (NMIE). Both of these methods utilize two photo-detectors for estimating the MUI signal. In spite of simple structure of these two receivers, their performance analysis shows an improved performances comparing to other receivers.