Title :
OFFH-CDMA code for WDM network developed with Merged M-sequence/hyperbolic code
Author :
Ferchichi, Moez ; Najjar, Monia ; Rezig, Houriya
Author_Institution :
Lab. des Syst. de Commun. (SYSCOM), Ecole Nat. d"Ing. de Tunis (SNIT), Tunis
Abstract :
In this paper, we propose an extension of two dimensions (2D) code cardinality. The code, developed for optical code division multiple access (OCDMA) system is generated by: merged M-sequences for the frequency hopping (in this work we consider the optical fast frequency hopping technique: OFFH) and the hyperbolic code for the time spreading. For familiespsila codes, minimum cross-correlation constraint (lambdac= 1) is applied to decrease the multiple access interference (MAI). Compared with the 2D code employing prime code for the time spreading, the extension will increase the cardinality to P(P - 1)2 users (proposed code) instead of P2 users.
Keywords :
code division multiplexing; frequency hop communication; interference (signal); m-sequences; optical fibre networks; wavelength division multiplexing; 2D code cardinality; OCDMA system; OFFH-CDMA code; WDM network; hyperbolic code; merged M-sequence code; minimum cross-correlation constraint; multiple access interference; optical code division multiple access system; optical fast frequency hopping; Bragg gratings; Electronic mail; Fiber gratings; Frequency conversion; Interference constraints; Multiaccess communication; Multiple access interference; Optical frequency conversion; Telecommunication network reliability; WDM networks; Fiber-Bragg gratings (FBG); Multiple Access Interference (MAI); Optical Fast Frequency hopping (OFFH); optical code division multiple access (OCDMA);
Conference_Titel :
Transparent Optical Networks, 2008. ICTON 2008. 10th Anniversary International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-2625-6
Electronic_ISBN :
978-1-4244-2626-3
DOI :
10.1109/ICTON.2008.4598802
