Experimental 2.5-Gb/s QPSK WDM phase-modulated radio-over-fiber link with digital demodulation by a K-means algorithm

Neil Guerrero Gonzalez, Darko Zibar, Antonio Caballero Jambrina, Idelfonso Tafur Monroy

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Highest reported bit rate of 2.5 Gb/s for optically phase modulated radio-over-fiber (RoF) link, employing digital coherent detection, is demonstrated. Demodulation of 3$,times,$ 2.5 Gb/s quadrature phase-shift keying modulated wavelength-division-multiplexed RoF channels is achieved after 79 km of transmission through deployed fiber. Error-free performance (bit-error rate corresponding to $10^{{-}4}$) is achieved using a digital coherent receiver in combination with a $K$-means algorithm for radio-frequency phase recovery.
Original languageEnglish
JournalI E E E Photonics Technology Letters
Volume22
Issue number5
Pages (from-to)335-337
ISSN1041-1135
DOIs
Publication statusPublished - 2010

Keywords

  • coherent communication
  • Carrier recovery
  • digital signal processing (DSP)
  • digital receivers
  • phase-modulation
  • radio-over-fiber (RoF)

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