Title :
2D Optical CDMA Technique Dedicated to Multimedia Transmission
Author :
Morelle, M. ; Julien-Vergonjanne, A. ; Cances, J.-P. ; Dumas, J.M.
Author_Institution :
XLIM Dipt., Univ. of Limoge, Limoges
Abstract :
In this paper, we investigate the application of optical code division multiple access (OCDMA) to multimedia transmission (voice, data, video). The various services are differentiated by assigning to each user a specific two-dimensional (2D) code signature. The coding method used is adapted from 2D multi-wavelength optical orthogonal codes (MWOOC). We first generate 2D multi-weight codes to differentiate the quality of service (QoS). Then, by applying a parallel mapping technique, we achieve multi-rate services. The theoretical error probability corresponding to the quality of each service is established in the noiseless case. This permits evaluating the potentiality of such systems in terms of number of communicating users and data rates. This study has been realized considering a conventional correlation receiver (CCR) with and without hard limiting (HL) device.
Keywords :
code division multiple access; error statistics; multimedia communication; optical communication; orthogonal codes; quality of service; 2D multiwavelength optical orthogonal codes; 2D optical CDMA technique; code division multiple access; conventional correlation receiver; error probability; hard limiting device; multimedia transmission; parallel mapping technique; quality of service; Bit error rate; Communications Society; Error probability; Interference; Multiaccess communication; Multimedia communication; Optical fiber communication; Optical noise; Optical receivers; Quality of service;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.1014
