Enable Software-Defined Radios for Real-Time MIMO Channel Sounding

Stanko D, Sommerkorn G, Ihlow A, Del Galdo G (2021)

Publication Type: Conference contribution

Publication year: 2021

Journal

Conference Record - IEEE Instrumentation and Measurement Technology Conference Institute of Electrical and Electronics Engineers

Publisher: Institute of Electrical and Electronics Engineers Inc.

Book Volume: 2021-May

Conference Proceedings Title: Conference Record - IEEE Instrumentation and Measurement Technology Conference

Event location: Virtual, Glasgow, GBR

ISBN: 9781728195391

DOI: 10.1109/I2MTC50364.2021.9460077

Abstract

This paper describes a field-programmable gate array (FPGA)-based implementation of a switched multiple input multiple output (MIMO) channel sounder realization by use of software-defined radio (SDR) hardware (NI USRP-2954, X310 series with UBX 160 daughterboard). Essential basic functionalities are the synchronous switching of the antenna elements at both link ends and an integrated automatic gain control (AGC) at the receiver. To meet the high timing requirements in the switched MIMO setup, an FPGA-based AGC is introduced. The detector of the AGC is based on a sample-by-sample calculation of the average and maximum of the I/Q samples within a sliding window. The used SDR hardware allows a minimum AGC update interval of approx. 14 μs and a timing accuracy of the antenna switching of 5 ns. Our setup demonstrates the applicability of state-of-the-art SDRs as a sounding system for continuous acquisition of the time-variant, directional mobile radio channel.

Involved external institutions

Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE) Technische Universität Ilmenau DE Germany (DE)

How to cite

APA:

Stanko, D., Sommerkorn, G., Ihlow, A., & Del Galdo, G. (2021). Enable Software-Defined Radios for Real-Time MIMO Channel Sounding. In Conference Record - IEEE Instrumentation and Measurement Technology Conference. Virtual, Glasgow, GBR: Institute of Electrical and Electronics Engineers Inc..

MLA:

Stanko, Daniel, et al. "Enable Software-Defined Radios for Real-Time MIMO Channel Sounding." Proceedings of the 2021 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2021, Virtual, Glasgow, GBR Institute of Electrical and Electronics Engineers Inc., 2021.

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