A Novel Mapping Technique for an Adaptive Length of Codes in SAC-OCDMA Systems

In this paper an adaptive mapping technique (AMT) is proposed for spectral amplitude coding-optical code division multiple access (SAC-OCDMA) system. The main purpose of the proposed technique is to construct codes whose length varies adaptively with the number of users. This task can be easily acco...

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Bibliographic Details
Published in:Wireless personal communications Vol. 123; no. 2; pp. 1103 - 1119
Main Authors: Hacini, Latifa, Aissaoui, Amel
Format: Journal Article
Language:English
Published: New York Springer US 01.03.2022
Springer Nature B.V
Subjects:
Code Division Multiple Access
Communications Engineering
Computer Communication Networks
Cross correlation
Engineering
Mapping
Mathematical analysis
Networks
Signal,Image and Speech Processing
Adaptive mapping technique (AMT)
Optical code division multiple access (OCDMA)
Spectral amplitude coding (SAC)
Zero cross-correlation
ISSN:0929-6212, 1572-834X
Online Access:Get full text
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Summary:In this paper an adaptive mapping technique (AMT) is proposed for spectral amplitude coding-optical code division multiple access (SAC-OCDMA) system. The main purpose of the proposed technique is to construct codes whose length varies adaptively with the number of users. This task can be easily accomplished by successive offsets of the basic code matrix. The important benefit is that all the codes resulting from this technique have a zero cross-correlation property even if the basic code matrix doesn’t check it. Therefore, the AMT technique effectively reduces both MAI and PIIN. SAC-OCDMA system employing AMT is mathematically analyzed and then numerically simulated using Matlab. The results show the improvement given by this mapping technique to the SAC-OCDMA system. It illustrate that the proposed mapping technique can supports more users with a higher bit rate compared to the existing mapping techniques in the literature. The advantages of this technique have made it a compelling candidate for future OCDMA applications.
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ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-021-09172-x