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Analytical and Experimental Performance Evaluation of Antenna Misalignment in Ka-band Wireless Links

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Abstract

In this paper, we propose a model for the effect of misalignment of antennas due to mechanical vibrations and experimentally validate its accuracy in a Ka-band (26-40 GHz) transmission link. Our approach provides a valuable tool that is analytically tractable and physically simple to implement. To highlight the applicability of the model, a setup based on a centralized radio access network (C-RAN) transmitting and receiving wireless signals in the Ka-band is implemented. With this tool, the robustness of 5G networks to antenna misalignments can be evaluated in terms of bit-error rate. We show how the presence of misalignment in this type of systems induces an error floor observable in the bit-error-rate performance. A simple static decision threshold is implemented taking into account the amount of displacement and, directly related to that factor, on the expected number of fades per unit time. The closed-form expressions derived through this paper are in perfect agreement with the experimental measurements taken from the implemented system.

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Acknowledgements

The authors would like to thank the Marie Sklodowska-Curie Innovative Training Network FiWiN5G supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 642355 and the Andalusian Knowledge Agency and the European Union under Marie-Curie COFUND Andalucía Talent Hub program under Grant 291780 for their financial support.

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Author notes

    Authors and Affiliations

    1. Department Photonics Engineering, Technical University of Denmark, Oersteds Plads Building 343, 2800, Kongens Lyngby, Denmark

      Sebastián Rodríguez

    2. Communications Engineering Department, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain

      Antonio Jurado-Navas

    3. Department of Electrical Engineering, Eindhoven University of Technology, De Zaale, 5600 MB, Eindhoven, Netherlands

      Antonio Jurado-Navas & Idelfonso Tafur Monroy

    4. Mellanox Technologies, Ledreborg Allé 130B, 4000, Roskilde, Denmark

      Juan José Vegas Olmos

    Authors
    1. Sebastián Rodríguez
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    2. Antonio Jurado-Navas
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    3. Juan José Vegas Olmos
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    4. Idelfonso Tafur Monroy
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    Corresponding author

    Correspondence to Sebastián Rodríguez.

    Additional information

    S. Rodríguez and A. Jurado-Navas have equally contributed to this work.

    Appendix: Symbols and notations

    Appendix: Symbols and notations

    For the sake of clarity, we have provided a list with the symbols and notations employed through this paper. It can be consulted in Table 3.

    Table 3 Table of symbols
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    Rodríguez, S., Jurado-Navas, A., Olmos, J.J.V. et al. Analytical and Experimental Performance Evaluation of Antenna Misalignment in Ka-band Wireless Links. Mobile Netw Appl 24, 564–577 (2019). https://doi.org/10.1007/s11036-018-1158-0

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