A parallel receiver architecture for multiple input multiple output (MIMO) channel sounding application is presented with a software-defined radio (SDR)-based field-programmable gate array (FPGA) implementation. The receiver covers phase coherent reception via shared local oscillator (LO) and reference clock, a timing scheme synchronous to the antenna switching at the transmitter, and an integrated automatic gain control (AGC) in all receive channels. It is built with SDRs (NI USRP-2955, X310 series with TwinRx daughterboards). The use of these off-the-shelf hardware components reduces the costs of the sounding system. The FPGA implementation together with the system parameters of the chosen hardware allows a minimum AGC update interval of approx. 44.38$\mu \mathrm{s}$. Our setup demonstrates the applicability of state-of-the-art SDRs as a sounding system for continuous acquisition of the time variant, space, and frequency selective radio propagation channel.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Enable SDRs for Real-Time MIMO Channel Sounding featuring Parallel Coherent Rx Channels


    Contributors:


    Publication date :

    2022-06-01


    Size :

    513019 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Unique challenges testing SDRs for space

    Chelmins, David / Downey, Joseph / Johnson, Sandra K. et al. | IEEE | 2013


    A Collection of SDRs for Global Navigation Satellite Systems (GNSS)

    Bernabeu, Joan / Palafox, Fernando / Li, Yafeng et al. | TIBKAT | 2022


    A Collection of SDRs for Global Navigation Satellite Systems (GNSS)

    Bernabeu, Joan / Palafox, Fernando / Li, Yafeng et al. | British Library Conference Proceedings | 2022


    Compress-and-Forward Relaying: Prototyping and Experimental Evaluation Using SDRs

    Ullah, Irfan / Ud Din, Fawad / Chattha, Jawwad Nasar et al. | IEEE | 2016