Abstract
This paper reports, for the first time, the coding and decoding of code-division
multiple-access (CDMA) signals for use in optical access networks using electronic
transversal filters at a chip rate of 18 Gchips/s, a ninefold improvement
over previous demonstrations. We demonstrate a 2-user ECDMA system. The use
of 7-chip transversal filters gives a potential for 7 users, where each user
has a data rate of 1.25 Gb/s. This is comparable to typical all-optical CDMA
systems but with potentially lower cost, power consumption and complexity.
Error-free transmission of a 1.25 Gb/s electronic CDMA user signal, with and
without a single interferer, over 10 km of single-mode fiber is reported for
the first time.
© 2009 IEEE
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