Phase noise suppression of optical OFDM signals in 60-GHz RoF transmission system

Chun-Ting Lin*, Chia Chien Wei, Ming I. Chao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The dispersion-induced phase noise (PN) in an OFDM RoF system at 60 GHz leads to not only subcarrier phase rotation (PRT) but also intercarrier interference (ICI) to severely degrade the transmission performance, when a commercial cost-effective DFB laser with the linewidth of several MHz is adopted. To mitigate both PRT and ICI, a post PN suppression algorithm is proposed, and it does not require any bandwidth-consuming pilot tone. For a 25.78-Gbps 16-QAM OFDM RoF signal using the laser with 1.8-MHz linewidth, employing the algorithm can extend the maximum transmission distance which corresponds to 3-dBm power penalty at the BER of 2 10-3 from 75 km to more than 115 km, i.e. 50% increment of transmission distance.

Original languageEnglish
Pages (from-to)10423-10428
Number of pages6
JournalOptics Express
Volume19
Issue number11
DOIs
StatePublished - 23 May 2011

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