Improving harmonic rejection for spectrum sensing using crosscorrelation

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

    6 Citations (Scopus)
    38 Downloads (Pure)

    Abstract

    Harmonic downmixing may cause a spectrum sensing device to erroneously flag parts of the spectrum as occupied. Receivers employing harmonic rejection (HR) rarely obtain more than 60 dB of HR, which may not be enough for spectrum sensing for dynamic spectrum access. We improve HR by employing two RF-receivers, integrated in a single 65nm CMOS IC, and using a small offset in their LO-frequencies. The offset is corrected in the digital baseband, after which the final receiver outputs are crosscorrelated. Our measurements show that the HR can be significantly improved without calibration or time penalty, even for high initial HR, but that the improvement is limited by crosstalk between the receivers.
    Original languageEnglish
    Title of host publication38th European Solid-State Circuit Conference, ESSCIRC 2012
    Place of PublicationPiscataway
    PublisherIEEE
    Pages361-364
    Number of pages4
    ISBN (Print)978-1-4673-2212-6
    DOIs
    Publication statusPublished - 2012
    Event38th European Solid-State Circuit Conference, ESSCIRC 2012 - Bordeaux, France
    Duration: 17 Sep 201221 Sep 2012
    Conference number: 38

    Conference

    Conference38th European Solid-State Circuit Conference, ESSCIRC 2012
    Abbreviated titleESSCIRC
    CountryFrance
    CityBordeaux
    Period17/09/1221/09/12

    Keywords

    • EWI-22457
    • IR-83399
    • METIS-296135

    Fingerprint Dive into the research topics of 'Improving harmonic rejection for spectrum sensing using crosscorrelation'. Together they form a unique fingerprint.

  • Cite this