18 gchips/s electronic CDMA for low-cost optical access networks

J. B. Rosas-Fernandez, J. D. Ingham, R. V. Penty, I. H. White

Research output: Contribution to journalArticlepeer-review

27 Citations (SciVal)


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.

Original languageEnglish
Pages (from-to)306-313
Number of pages8
JournalJournal of Lightwave Technology
Issue number3
Publication statusPublished - 1 Feb 2009


  • Access networks
  • Electronic code-division multiple-access (CDMA)
  • Gold codes
  • Multi-user interference
  • Optical CDMA

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of '18 gchips/s electronic CDMA for low-cost optical access networks'. Together they form a unique fingerprint.

Cite this