Title :
Performance analysis of 2-D time-wavelength OCDMA systems with coherent light sources: code design considerations
Author :
Bazan, Taher M. ; Harle, David ; Andonovic, Ivan
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow
Abstract :
The performance of two-dimensional (2-D) time-wavelength (TW) optical code-division multiple access systems at both physical and data link layers is considered in the presence of a multitude of noise sources. Particular consideration is given however to both beat noise (BN) and multiple-access-interference effects. A general procedure for calculating BN is presented. Comparisons between several 2-D TW codes comprising single-pulse-per-column/row and multiple-pulse-per-column/row strategies are performed. Results reveal that BN is strongly dependent on the code properties and the distribution of wavelengths within a code. Several aspects for 2-D TW code design are presented that mitigate the effect of BN
Keywords :
code division multiple access; codes; light coherence; light sources; optical fibre LAN; 2D OCDMA; beat noise; code design; coherent light sources; data link layers; local area networks; multiple-access-interference effects; noise sources; optical code-division multiple access systems; time-wavelength OCDMA; Light sources; Multiaccess communication; Multiple access interference; Optical crosstalk; Optical design; Optical mixing; Optical noise; Optical receivers; Performance analysis; Photodetectors; Beat noise (BN); optical code-division multiple access (OCDMA); optical codes; time wavelength (TW);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.881479
