Abstract
The effect of beat noise on optical code-division multiple-access (OCDMA)
systems using a range of two-dimensional (2-D) time-spreading/wavelength-hopping
(TW) code families is presented. A derivation of a general formula for the error
probability of the system is given. The properties of the 2-D codes--namely, the
structure, length, and cross-correlation characteristics--are found to have a great
influence on system performance. Improved performance can be obtained by use of
real-time dynamic thresholding.
© 2004 Optical Society of America
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