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Performance of SAC-OCDMA system utilizing subcarrier multiplexing technique for high capacity access network

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6 Author(s)
Junita, M.N. ; Sch. of Comput. & Commun. Eng., Univ. Malaysia Perlis, Kuala Perlis, Malaysia ; AlJunid, S.A. ; Abd, T.H. ; Anuar, M.S.
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In this paper, the implementation of subcarrier multiplexing technique in spectral amplitude coding (SAC) optical code division multiple access (OCDMA) network using Zero Cross Correlation code is developed and investigated. Theoretical analysis is done to determine the signal-to-noise ratio of such network and analysis of the performances in term of bit error rates are presented. Simulations are done using Optisys software version 6.0. Motivation to this research is driven to take advantage of both the low implementation cost of the SCM technology which uses the existing RF/microwave devices; and the attractive SAC which reduce the Multiple Access Interference (MAI) in OCDMA system. The use of ZCC code can eradicate phase induced intensity noise (PUN) which will contribute to better BER. For typical error rate of optical communication system of 10e-9, it has been observed fro theoretical results that the new hybrid SCM/OCDMA system provide better spectral efficiency and accommodate more users simultaneously with less code length and thus lower cost of implementations than the traditional OCDMA network utilizing the ZCC code. Thus this system could be one promising solution to the symmetric high capacity access network with high spectral efficiency, cost effective, good flexibility and enhanced security, which makes an attractive candidate for next generation broadband access network.

Published in:

Photonics (ICP), 2011 IEEE 2nd International Conference on

Date of Conference:

17-19 Oct. 2011