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

Chun-Ting Lin | Zendy; Chia-Chien Wei | Zendy; Ming-I Chao | Zendy

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

Author(s) -

Chun-Ting Lin,

Chia-Chien Wei,

Ming-I Chao

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.010423

Subject(s) - laser linewidth , phase noise , orthogonal frequency division multiplexing , subcarrier , optics , bandwidth (computing) , transmission (telecommunications) , quadrature amplitude modulation , bit error rate , laser , physics , electronic engineering , computer science , telecommunications , engineering , channel (broadcasting)

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.

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