IQ imbalance in heterodyne transceivers with zero-second-IF for wide-band mmW links

  1. Ainhoa Rezola 12
  2. Juan Francisco Sevillano 12
  3. Martin Leyh 3
  4. Moises Lorenzo 3
  5. Roc Berenguer 12
  6. Aharon Vargas 3
  7. Igone Vélez 12
  1. 1 Centro de Estudios e Investigaciones Técnicas de Gipuzkoa
    info

    Centro de Estudios e Investigaciones Técnicas de Gipuzkoa

    San Sebastián, España

    ROR https://ror.org/022wqqf69

  2. 2 Universidad de Navarra
    info

    Universidad de Navarra

    Pamplona, España

    ROR https://ror.org/02rxc7m23

  3. 3 Fraunhofer Institute for Integrated Circuits
    info

    Fraunhofer Institute for Integrated Circuits

    Erlangen, Alemania

    ROR https://ror.org/024ape423

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Revista:
International Journal on Advances in Telecommunications

ISSN: 1942-2601

Año de publicación: 2015

Volumen: 8

Número: 1-2

Páginas: 25 - 34

Tipo: Artículo

GOOGLE SCHOLAR

Otras publicaciones en: International Journal on Advances in Telecommunications

Resumen

Millimeter wave links are an attractive solution for mobile network backhaul. In order to cope with the requirements of future networks, these millimeter wave links should achieve Gigabit data rates. These data rates can be achieved by using wide-band and high order modulations in E-Band. Heterodyne architectures are good candidates for integrated transceivers, but, the design of integrated transceivers at these frequencies is a challenging issue. An important source of degradation is I/Q imbalance, which can significantly reduce the performance of a communication system with zero-second-IF transceivers if it is not appropriately compensated. The article analyzes the source of this IQ imbalance and proposes the use of different digital processing techniques, including a linear adaptive equalizer scheme. The performance of the transceiver is analyzed at system level by means of simulations. The results presented in the article suggest that the use of those techniques is able to mitigate the impact of the IQ imbalance effects, in order to allow the use of a high-order modulation such as 64QAM.