A major concern for adaptive antennas is the calibration of hardware. Here we consider the calibration of an analog beamformer (ABF), which calculates the weights in a digital signal processor (DSP), but weights the RF signals using a hardware beamformer. Two novel methods are presented of performing a calibration of this adaptive antenna during normal operation. This will mitigate temperature drift and aging of active components. Both methods uses a feedback of the beamformer output signal, to calculate the error in the beamformer output or to identify the parameters in the temperature drift. The algorithms are transparent to normal antenna operation and are computationally simple. Simulations show that when using these auto-calibration methods, the performance is independent of variation in hardware parameters when a realistic temperature drift is introduced. The proposed algorithms are intended for use in a time-division multiple access (TDMA) mobile telephone system, but the methods are applicable in radar systems also.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Auto-calibrating adaptive array for mobile telecommunications


    Beteiligte:
    Wennstrom, M. (Autor:in) / Strandell, J. (Autor:in) / Oberg, T. (Autor:in) / Lindskog, E. (Autor:in) / Rydberg, A. (Autor:in)


    Erscheinungsdatum :

    01.04.2000


    Format / Umfang :

    288490 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Auto-calibrating tyre pressure monitoring system

    Europäisches Patentamt | 2018

    Freier Zugriff

    Auto-calibrating tyre pressure monitoring system

    BROADFIELD GARY | Europäisches Patentamt | 2021

    Freier Zugriff

    Auto-calibrating tyre pressure monitoring system

    GARY BROADFIELD | Europäisches Patentamt | 2020

    Freier Zugriff

    AUTO-CALIBRATING TYRE PRESSURE MONITORING SYSTEM

    BROADFIELD GARY | Europäisches Patentamt | 2019

    Freier Zugriff