Analysis of static/dynamic 2-D optical CDMA correlation and chip level receivers under both shot and thermal noises using array waveguide grating

Authors:
Ashraf G. Elmeligy;Alaa Hasez;El-Sayed A. EI-Badawy
Affiliations:
Elect. Eng. Dept, Fac. of Engineering, Alexandria University, Alexandria, Egypt;Elect. Eng. Dept, Fac. of Engineering, Alexandria University, Alexandria, Egypt;Alexandria Higher Institute of Engineering & Technology, Alexandria Egypt
Venue:
HONET'09 Proceedings of the 6th international conference on High capacity optical networks and enabling technologies
Year:
2009

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Abstract

The effect of both shot & thermal noises on the performance of 2-D wavelength hopping/time spreading CDMA static and dynamic systems is analyzed. Noise variance and probability of error are calculated for general systems employing asymmetric prime-hop codes (APHCs). A comparison is held between the performance of static/dynamic noisy chip level receivers, noiseless correlation receivers and noisy correlation receivers. We have proposed four new systems; dynamic 2-D transmitter, dynamic 2-D correlation receiver, static and dynamic 2-D chip level receivers. The analysis reveals that the performance of the static/dynamic chip level receiver is better than the correlation receiver. Furthermore, this paper shows that the system utilization is improved when using dynamic code allocation.