Performance evaluation of two-dimensional cyclic shift coding technique for Optical Code Division Multiple Access System

2021 ◽  
pp. 262-267
Author(s):  
Navya Siringi ◽  
Gurjit Kaur
Keyword(s):  
Performance Evaluation ◽  
Code Division Multiple Access ◽  
Multiple Access ◽  
Two Dimensional ◽  
Cyclic Shift ◽  
Access System ◽  
Code Division Multiple ◽  
Multiple Access System

scholarly journals Enhancement of optical code division multiple access system based on 2D ZCC/MD spectral/spatial code

2019 ◽  
Vol 14 (2) ◽  
pp. 661
Author(s):  
Rima Matem ◽  
S. A. Aljunid ◽  
M. N Junita ◽  
C. B. M Rashidi ◽  
Israa Shihab Aqrab
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Cross Correlation ◽  
Spatial Code ◽  
Two Dimensional ◽  
Effective Power ◽  
One Dimensional ◽  
Access System ◽  
Code Division Multiple ◽  
Multiple Access System

<span>The combination of 1D zero cross correlation (ZCC) and 1D Multi Diagonal (MD) results a new two dimensional hybrid called 2D ZCC/MD code for spectral/spatial OCDMA system. The proposed code aims to enhance the functional qualities of Optical Code Division Multiple Access (OCDMA) and to overcome the limitations of one dimensional codes. In this paper,   2D ZCC/MD is evaluated at data rate; 622Mbps.  A comparison of the proposed 2D ZCC/MD code to 1D Random Diagonal (RD) and 1D Modified Double Weight (MDW) highlight that 2D ZCC/MD  can support  a large number of active  users even at the higher user bit rate. Furthermore, in term of effective power 2D ZCC/MD can achieve lower effective power.</span>

scholarly journals Analysis of the Performance of Optical Code-Division Multiple-Access System (OCDMA), Operating with Gold Codes under Nonlinear Effects

2013 ◽  
Vol 05 (02) ◽  
pp. 49-57 ◽  
Author(s):  
Glendo de Freitas Guimarães ◽  
Agliberto Melo Bastos ◽  
Alisson da Conceição Ferreira ◽  
Alex Sander Barros Queiroz ◽  
José Wally Mendonça Menezes ◽  
...  
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Nonlinear Effects ◽  
Access System ◽  
Gold Codes ◽  
Code Division Multiple ◽  
Multiple Access System

Source coherence impairments in a direct detection direct sequence optical code-division multiple-access system

2007 ◽  
Vol 46 (4) ◽  
pp. 456 ◽  
Author(s):  
Ihsan Fsaifes ◽  
Catherine Lepers ◽  
Mounia Lourdiane ◽  
Philippe Gallion ◽  
Vincent Beugin ◽  
...  
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Direct Detection ◽  
Direct Sequence ◽  
Access System ◽  
Code Division Multiple ◽  
Multiple Access System

Orthogonal Frequency Division Multiplexing and Code Division Multiple Access Systems

2021 ◽  
pp. 386-426
Author(s):  
Stevan Berber
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Intermediate Frequency ◽  
Frequency Division ◽  
Access Technology ◽  
Multicarrier Communication ◽  
Access System ◽  
Non Binary Code ◽  
Code Division Multiple ◽  
Multiple Access System

Chapter 8 presents modern multi-user and multicarrier communication systems based on code division multiple access technology and orthogonal frequency division multiple access technology. Analogue, digital, and discrete orthogonal frequency division multiple access systems are presented separately and then inter-related from theoretical and practical points of view. A precise mathematical model of discrete baseband and intermediate-frequency blocks is presented, including procedures for signal mapping and the discrete Fourier transform, and then related to the model of an analogue radiofrequency block to make the whole orthogonal frequency division multiple access system. The basic theory of binary and non-binary code division multiple access systems operation is presented. To support deeper theoretical understanding of the design and operation of a code division multiple access system, one project in the supplementary material demonstrates the mathematical modelling, simulation, and design of this system in field-programmable gate array technology and presents the development tools required.

Sign in / Sign up

Export Citation Format

Share Document