A New Algorithm for Development of Dynamic Cyclic Shift Code for Spectral Amplitude Coding Optical Code Division Multiple Access Systems

• Published in: Fiber and integrated optics 2012-11, Vol.31 (6), p.397-416
• Main Authors: Abd, Thanaa Hussein, Aljunid, S. A., Fadhil, Hilal Adnan, Ahmad, R. B.
• Format: Article
• Language: English
• Subjects: Applied sciences; Code Division Multiple Access; Coding theory; Coding, codes; dynamic cyclic shift code; Exact sciences and technology; Fiber optics; Information, signal and communications theory; modified double weight code; modified quadratic congruence code; random diagonal code; Signal and communications theory; Simulation; spectral amplitude coding-optical code division multiple access system; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments)
• ISSN: 0146-8030; 1096-4681
• DOI: 10.1080/01468030.2012.733905

This article presents a new code-the dynamic cyclic shift code-for spectral amplitude coding-optical code division multiple access systems. One of the important properties of the dynamic cyclic shift code is that the number of users can be increased without increasing the weight value. System performance was evaluated by using both theoretical analysis as well as the simulation experiment. The analysis results show that the proposed dynamic cyclic shift code can support more users in spectral amplitude coding-optical code division multiple access systems compared to spectral amplitude coding-optical code division multiple access codes. It was ascertained by performance evaluation that the dynamic cyclic shift code possesses ideal properties for use in spectral amplitude coding-optical code division multiple access systems.