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    Gain-Switched Optical Frequency Combs for Future Mobile Radio-Over-Fiber Millimeter-Wave Systems


    Browning, Colm and Elwan, Hamza Hallak and Martin, Eamonn P. and O'Duill, Sean and Poette, Julien and Sheridan, Paul and Farhang, Arman and Cabon, Beatrice and Barry, Liam P. (2018) Gain-Switched Optical Frequency Combs for Future Mobile Radio-Over-Fiber Millimeter-Wave Systems. Journal of Lightwave Technology, 36 (19). pp. 4602-4610. ISSN 0733-8724

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    Abstract

    The millimeter-wave (mm-wave) frequency band has emerged as a means to overcome current radio frequency spectral limitations and represents an interesting solution to fulfill the bandwidth and networking requirements of fifth generation (5G) mobile communications and beyond. Photonic generation of these frequencies holds advantages over electronic methods in terms of cost and effective network distribution. Due to their coherent nature, optical frequency combs (OFC) are a promising solution for the efficient generation of mm-wave frequencies. The work outlined examines the use of OFCs in a mm-wave radio-over-fiber (RoF) heterodyne system with regard to the specific requirements of a 5G candidate waveform, universally filtered orthogonal frequency division multiplexing. Through experimentation and simulation, the key limitations of linewidth, effective path length difference, and relative intensity noise (RIN) are explored. Results are presented, in terms of error vector magnitude (EVM), for a wide range of system parameters highlighting important considerations to be taken in designing future mm-wave RoF systems employing OFCs. Performance of ∼5% EVM using single sideband modulation is achieved for optimized system conditions and an RIN level of −132 dB/Hz.

    Item Type: Article
    Keywords: Gain-Switched; Optical; Frequency Combs; Future Mobile; Radio-Over-Fiber; Millimeter-Wave Systems;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 13284
    Identification Number: https://doi.org/10.1109/JLT.2018.2841365
    Depositing User: Arman Farhang
    Date Deposited: 24 Sep 2020 16:29
    Journal or Publication Title: Journal of Lightwave Technology
    Publisher: Optical Society of America / Institute of Electrical and Electronics Engineers
    Refereed: Yes
    URI:

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