Paper Title:

Hybrid OCDMA over WDM System Using Modified Double Weight (MDW) Code for Optical Access Network

Periodical Advanced Materials Research (Volumes 433 - 440)
Main Theme Materials Science and Information Technology
Chapter Chapter 12: Computer-Aided Design, Manufacturing and Engineering
Edited by Cai Suo Zhang
Pages 3878-3883
DOI 10.4028/www.scientific.net/AMR.433-440.3878
Citation N. Ahmed et al., 2012, Advanced Materials Research, 433-440, 3878
Online since January 2012
Authors N. Ahmed, S. A. Aljunid, Hilal A. Fadil, R. B. Ahmad, M.A. Rashid
Keywords Fiber Bragg Grating (FBG), Modified Double Weight (MDW) Code, SAC-OCDMA, WDM
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In this paper a hybrid optical code division multiple access (OCDMA) over wavelength division multiplexing (WDM) network is proposed to support large number of subscribers. The system combines two different techniques, namely OCDMA and WDM for supporting many subscribers simultaneously. We used modified double weight (MDW) codes as a signature address in designing the system because this code can accommodate more number of simultaneous active users under considerable standard bit error rate (e.g. ≤ 10-9). The induced MDW code for hybrid system can eliminate multiuser interference fully and increase the bit-error-rate performance compared to other codes at the same time. We ascertained by simulation results that the proposed scheme provides very good performance and enhance the network capability. Therefore, this system can be considered as a promising solution for the next generation optical access network.

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