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Simulation analysis of security performance of DPSKOCDMA network via virtual user scheme

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Author(s): Vishav Jyoti

Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873

Volume: 6;
Issue: 02;
Start page: 238;
Date: 2012;
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Keywords: DPSK | eavesdropping | OCDMA

ABSTRACT
A novel technique to enhance the security of an optical code division multipleaccess (OCDMA) system against eavesdropping is proposed. It has been observed that whena single user is active in the network, an eavesdropper can easily sift the data beingtransmitted without decoding. To increase the security, a virtual user scheme is proposed andsimulated on a differential phase shift keying (DPSK) OCDMA system. By using the virtualuser scheme, the security of the DPSK-OCDMA system can be effectively improved and themultiple access interference, which is generally considered to be a limitation of the OCDMAsystem, is used to increase the confidentiality of the system.
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