Nonlinearity effect in double-spread CDMA wired-wireless network

Chih T. Yen, Jen-Fa Huan

Research output: Contribution to journalArticle

Abstract

This study presents a double-spread code-division multiple-access (CDMA) scheme for radio-over-fiber (RoF) transmissions. The optical network coder/decoders (codecs) are implemented using optical switches (OSWs) coded with bipolar pseudo-noise (PN) codes. The multiple-access interference (MAI) caused by nonlinear optical source on the system performance is evaluated numerically for different values of the optical modulation index (OMI). At low OMI, the optical device noise is dominant. But at high OMI, nonlinear effect becomes significant. The high-performance, flexible characteristics of the double-spread CDMA render the scheme an ideal solution for radio-CDMA wireless system cascaded with optical CDMA network.

Original languageEnglish
Pages (from-to)251-259
Number of pages9
JournalInternational Journal of Electrical Engineering
Volume15
Issue number4
Publication statusPublished - 2008 Aug

Fingerprint

Code division multiple access
Light modulation
Wireless networks
Modulation
Radio-over-fiber
Multiple access interference
Optical switches
Optical devices
Fiber optic networks
Light sources

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

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Nonlinearity effect in double-spread CDMA wired-wireless network. / Yen, Chih T.; Huan, Jen-Fa.

In: International Journal of Electrical Engineering, Vol. 15, No. 4, 08.2008, p. 251-259.

Research output: Contribution to journalArticle

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