Multiple user channel capacity analysis of code-division multiple access system based on space-time block coding

2013 ◽  
Author(s):  
Yang Jie ◽  
Liu Xu ◽  
Xie Wu
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Capacity Analysis ◽  
Time Block ◽  
Block Coding ◽  
Access System ◽  
Multiple User ◽  
Space Time Block Coding ◽  
Code Division Multiple ◽  
Multiple Access System

Performance of Different OCDMA Codes with FWM and XPM Nonlinear Effects

2017 ◽  
Vol 38 (3) ◽  
Author(s):  
Shivani Rana ◽  
Amit Gupta
Keyword(s):  
Phase Modulation ◽  
Code Division Multiple Access ◽  
Multiple Access ◽  
Cross Correlation ◽  
Nonlinear Effects ◽  
Access System ◽  
Multiple User ◽  
Code Division Multiple ◽  
User Interference ◽  
Multiple Access System

AbstractIn this paper, 1 Gb/s non-linear optical code division multiple access system have been simulated and modeled. To reduce multiple user interference multi-diagonal (MD) code which possesses the property of having zero cross-correlation have been deployed. The MD code shows better results than Walsh-Hadamard and multi-weight code under the nonlinear effect of four-wave mixing (FWM) and cross-phase modulation (XPM). The simulation results reveal that effect of FWM reduces when MD codes are employed as compared to other codes.

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
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