Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v3i4.248
Error Probability Bound Considering Beat Noise in 2-D OCDMA Systems
Stephanie Sahuguede
; XLIM DPT-C²S² UMR CNRS 6172 ENSIL, 16 rue d’Atlantis, 87068 LIMOGES, FRANCE
Anne Julien-Vergonjanne
; XLIM DPT-C²S² UMR CNRS 6172 ENSIL, 16 rue d’Atlantis, 87068 LIMOGES, FRANCE
Jean-Pierre Cances
; XLIM DPT-C²S² UMR CNRS 6172 ENSIL, 16 rue d’Atlantis, 87068 LIMOGES, FRANCE
Sažetak
Considering a 2-Dimensional Optical Code Division Multiple Access (2-D OCDMA) system using spreading codes in both time and wavelength domains, we study in this paper the impact on the performance of one of the most predominant performance limitation which is beat noise due to the photo detection. The beat noise impact is correlated with the wellknown OCDMA limitation named Multiple Access Interference (MAI). Our contribution is to assess, through a theoretical analysis, an error probability bound of a system working in incoherent or partially coherent optical regime. Thanks to the theoretical error probability expression we have developed, the specifications and requirements needed to neglect beat noise effect in a 2-D OCDMA system with a conventional receiver are easily obtained. For a targeted Bit Error Rate (BER), and a given number of active users, one can determine from our results, the 2-D code family parameters, the available data rate and the optical source characteristics, required to be free of beat noise impact.
Ključne riječi
beat noise; code division multiple access; multi wavelength optical orthogonal codes; optical networks
Hrčak ID:
180676
URI
Datum izdavanja:
20.12.2007.
Posjeta: 676 *