Design of New Family of Multi-length Two-dimensional Codes for Optical CDMA System

2008 ◽  
Vol 29 (1) ◽  
Author(s):  
Xiuli Zhou ◽  
Yu Hu ◽  
Pei Lin
Keyword(s):  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional ◽  
New Family

A new family of two-dimensional codes for optical CDMA systems

Optik ◽  
2009 ◽  
Vol 120 (18) ◽  
pp. 959-962 ◽  
Author(s):  
Jaswinder Singh ◽  
Maninder Lal Singh
Keyword(s):  
Optical Cdma ◽  
Two Dimensional ◽  
New Family ◽  
Cdma Systems

Multilength two-dimensional codes for optical CDMA system

2005 ◽  
Vol 1 (3) ◽  
pp. 232-234 ◽  
Author(s):  
Xiu-li Zhou ◽  
Yu Hu
Keyword(s):  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional

Modified multi-wavelength optical orthogonal code for spectral efficiency improvement in two-dimensional optical CDMA system

2007 ◽  
Vol 1 (6) ◽  
pp. 1195 ◽  
Author(s):  
M. Morelle ◽  
C. Goursaud-Brugeaud ◽  
A. Julien-Vergonjanne ◽  
J.-P. Cances
Keyword(s):  
Spectral Efficiency ◽  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional ◽  
Efficiency Improvement ◽  
Optical Orthogonal Code ◽  
Multi Wavelength ◽  
Orthogonal Code

Two Dimensional Tunable Optical-CDMA System

2016 ◽  
Vol 4 (1) ◽  
pp. 125
Author(s):  
Rajesh Yadav Yadav ◽  
Gurjit Kaur Kaur
Keyword(s):  
Prime Number ◽  
Code Division Multiple Access ◽  
Optical Signal ◽  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional ◽  
Eye Diagram ◽  
Optical Delay ◽  
Code Division Multiple ◽  
Multiple Access System

<p>In this work an experimental demonstration is proposed to implement the synchronous optical code division multiple access system using two dimensional wavelength hopping and time spreading optical prime code is presented. An optical CDMA system is configured on latest version of optisystem by optiwave for the 20 users (Prime Number = 5) connected in a network operating at a bit rate 10 Gbps each. Tunability is achieved by using a MATLAB based delay selector which serves as the source of control signal for optical delay lines. The encoded optical signal of each user has been assigned a particular mode. The resulting optical signal is then transmitted over parabolic index multimode optical fiber. The received signal can successfully be retrieved at the decoder, when the encoder and decoder are configured for the same user. The performance of Optical CDMA system is evaluated in terms of the autocorrelation and cross correlation function, BER, Q factor, eye diagram and compared with 1D code for a given prime number. </p>

scholarly journals Noncoherent spatial/spectral optical CDMA system with two-dimensional perfect difference codes

2005 ◽  
Vol 23 (12) ◽  
pp. 3966-3980 ◽  
Author(s):  
Cheing-Hong Lin ◽  
Jingshown Wu ◽  
Chun-Liang Yang
Keyword(s):  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional

Development of a novel two-dimensional-SWZCC – Code for spectral/spatial optical CDMA system

2019 ◽  
Vol 109 ◽  
pp. 233-240 ◽  
Author(s):  
A. Cherifi ◽  
N. Jellali ◽  
M. Najjar ◽  
S.A. Aljunid ◽  
B.S. Bouazza
Keyword(s):  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional

A new family of two-dimensional optical orthogonal codes for massive optical CDMA networks

2005 ◽  
Author(s):  
Jianhua Ji ◽  
Ming Xu ◽  
Shuwen Yang ◽  
Zhipeng Zhang ◽  
Ke Wang
Keyword(s):  
Optical Cdma ◽  
Two Dimensional ◽  
Optical Orthogonal Codes ◽  
New Family ◽  
Orthogonal Codes ◽  
Cdma Networks

Two-Dimensional Optical CDMA System Parameters Limitations for Wavelength Hopping/Time-Spreading Scheme based on Simulation Experiment

2018 ◽  
Vol 39 (2) ◽  
pp. 223-229
Author(s):  
Chahinaz Kandouci ◽  
Ali Djebbari
Keyword(s):  
Cross Correlation ◽  
Block Design ◽  
Computer Experiment ◽  
Optical Cdma ◽  
Two Dimensional ◽  
System Parameters ◽  
New Family ◽  
Transmission Distance ◽  
Hybrid Code ◽  
Balanced Incomplete Block

AbstractA new family of two-dimensional optical hybrid code which employs zero cross-correlation (ZCC) codes, constructed by the balanced incomplete block design BIBD, as both time-spreading and wavelength hopping patterns are used in this paper. The obtained codes have both off-peak autocorrelation and cross-correlation values respectively equal to zero and unity. The work in this paper is a computer experiment performed using Optisystem 9.0 software program as a simulator to determine the wavelength hopping/time spreading (WH/TS) OCDMA system performances limitations. Five system parameters were considered in this work: the optical fiber length (transmission distance), the bitrate, the chip spacing and the transmitted power. This paper shows for what sufficient system performance parameters (BER≤10−9, Q≥6) the system can stand for.

Two-dimensional multi-service code for spectral/spatial optical CDMA system

2017 ◽  
Vol 49 (12) ◽  
Author(s):  
Monia Najjar ◽  
Nabiha Jellali ◽  
Moez Ferchichi
Keyword(s):  
Optical Cdma ◽  
Cdma System ◽  
Two Dimensional
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