Abstract
In this paper, a new family of two-dimensional (2-D) optical codes with
the maximum cross-correlation value of two is constructed and analyzed for
optical code-division multiple access. Our 2-D codes employ wavelength hopping,
controlled by the permutations of “synchronized” prime sequences,
onto the pulses of a time-spreading optical orthogonal code (OOC). The new
construction supports larger code cardinality (for more subscribers) and heavier
code weight (for better code performance) without increasing the code length
or number of wavelengths. Under certain conditions, our analysis shows that
the new codes can perform better than our multiple-wavelength OOCs, which
have cross-correlation values of at most one.
© 2008 IEEE
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