Predistortion study of radio over fibre link

Atso Hekkala, Jari Perttu, Mika Lasanen, Luis Vieira, Nathan Gomes

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    4 Citations (Scopus)


    The concept of virtual MIMO (multiple-input multiple output) has been proposed to tackle the challenges arising from high data rate wireless communications. Connecting a central unit (CU) with remote antenna units (RAUs), Radio over Fibre (RoF) links are an essential part of the virtual MIMO systems. This paper considers the adaptive compensation of the nonlinear distortions introduced by a RoF link and power amplifier (PA) connected in series. For the predistorter, we study the effects of the fixed point calculation to the performance. Our simulation results indicate that a fixed point predistorter with reasonably low word lengths gives almost the same performance as a floating point predistorter. Hence, it is possible to implement a feasible, low cost and energy consumption, fixed point predistorter into a field-programmable gate array (FPGA).
    Original languageEnglish
    Title of host publication2010 Future Network & Mobile Summit
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages8
    ISBN (Electronic)978-1-905824-16-8
    ISBN (Print)978-1-905824-18-2
    Publication statusPublished - 2010
    MoE publication typeNot Eligible
    Event2010 Future Network and Mobile Summit - Florence, Italy
    Duration: 16 Jun 201018 Jun 2010


    Conference2010 Future Network and Mobile Summit


    • fixed point implementation
    • predistortion
    • radio over fibre, virtual MIMO


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