Abstract
We present an extended theoretical model for time-spreading
optical code-division multiple-access (OCDMA) coherent systems. We have updated
well-known model to evaluate multiuser interference to include arbitrary encoded/decoded
chip shape, receiver transfer function, and optical thresholding before detection.
Full asynchronous regime is also assumed to exploit statistical benefits over
the dominant primary beat noise. The model provides clear improvements in
terms of number of users and required intercodes crosstalk, leading to more
feasible OCDMA systems.
© 2008 IEEE
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