Abstract
In this paper, a novel architecture of spatial/spectral optical code-division
multiple-access (OCDMA) systems using partial modified prime (PMP) codes together
with error-correction codes is proposed. Using PMP codes for channel division
can completely eliminate multiple-user interference and suppress phase-induced
intensity noise due to the zero cross-correlation property in each code group.
Moreover, by applying convolutional codes on the spectral slices of output
optical signals, the system performance can be further improved without extra
bandwidth. Numerical results show that the proposed system can accommodate
147 simultaneous users and the data rate of each user can achieve 10 Gbps
at bit error rate around 10$^{- 9}$ and spectral width equal to 30 nm. Compared with other conventional
spatial/spectral OCDMA systems, the proposed system has lower complexity and
better performance.
© 2008 IEEE
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