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 journalArticleAcademicpeer-review

32 Citations (Scopus)


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
Pages (from-to)335-337
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number5
Publication statusPublished - 2010
Externally publishedYes

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