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Massive MIMO real-time channel measurements and theoretic TDD downlink throughput predictions

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
Subtitle of host publicationProceedings of a meeting held 4-8 September 2016, Valencia, Spain
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781509032549
ISBN (Print)9781509032556
DateAccepted/In press - 4 Sep 2016
DateE-pub ahead of print - 22 Dec 2016
DatePublished (current) - Feb 2017
EventPIMRC 2016: 27th Annual IEEE Internatonal Symposium on Personal, Indoor and Mobile Radio Communications - Valencia, Spain
Duration: 4 Sep 20167 Sep 2016

Publication series

NameProceedings of the Personal, Indoor, and Mobile Radio Communications (PIMRC)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN (Electronic)2166-9589


ConferencePIMRC 2016


This paper is the first to evaluate the realistic performance of Massive MIMO using real-time channel measurements conducted at 3.51GHz. Our testbed consists of 64 National Instruments Universal Software Radio Peripheral Reconfigurable Input and Output (NI USRP RIO) software defined radios (SDRs) with 128 dipole antennas at the Base Station (BS) side, and 6 USRPs configured as 12 single-antenna User Equipment (UE) nodes. The system operates in a Time Division Duplex (TDD) fashion with a Long Term Evolution (LTE) like Physical Layer framework which, when fully deployed, will enable instantaneous throughput measurements on the Uplink (UL) and Downlink (DL) according to a user-defined frame schedule. In this paper we present real-time UL channel measurements at all BS antenna ports simultaneously, which allows the temporal characteristics of the Massive MIMO channel to be recorded. Eigen-beamforming precoding and a Received Bit-level Mutual Information Rate (RBIR) abstraction simulator are then used to predict the theoretic DL performance. We quantify the co-located Massive MIMO throughput for differing numbers of BS antennas (i.e. 32, 64 and 112 elements) and UE locations for an indoor environment.

    Research areas

  • Massive MIMO, Massive MU-MIMO, 5G, Field Trial, Testbed


PIMRC 2016: 27th Annual IEEE Internatonal Symposium on Personal, Indoor and Mobile Radio Communications

Duration4 Sep 20167 Sep 2016
Degree of recognitionInternational event

Event: Conference

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via IEEE at Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 793 KB, PDF document


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