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Journal of Computer Networks and Communications
Volume 2018, Article ID 3192520, 11 pages
https://doi.org/10.1155/2018/3192520
Research Article

A New Prime Code for Synchronous Optical Code Division Multiple-Access Networks

RMIT University, Melbourne, Australia

Correspondence should be addressed to Huda Saleh Abbas; ua.ude.timr.tneduts@2315223s

Received 9 August 2017; Revised 19 November 2017; Accepted 29 November 2017; Published 28 February 2018

Academic Editor: Youyun Xu

Copyright © 2018 Huda Saleh Abbas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new spreading code based on a prime code for synchronous optical code-division multiple-access networks that can be used in monitoring applications has been proposed. The new code is referred to as “extended grouped new modified prime code.” This new code has the ability to support more terminal devices than other prime codes. In addition, it patches subsequences with “0s” leading to lower power consumption. The proposed code has an improved cross-correlation resulting in enhanced BER performance. The code construction and parameters are provided. The operating performance, using incoherent on-off keying modulation and incoherent pulse position modulation systems, has been analyzed. The performance of the code was compared with other prime codes. The results demonstrate an improved performance, and a BER floor of 10−9 was achieved.