LOS Throughput Measurements in Real-Time with a 128-Antenna Massive MIMO Testbed

Paul Harris, Siming Zhang, Mark Beach, Evangelos Mellios, Andrew Nix, Simon Armour, Angela Doufexi, Karl Nieman, Nikhil Kundargi

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

16 Citations (Scopus)
371 Downloads (Pure)


This paper presents initial results for a novel 128-antenna massive Multiple-Input, Multiple- Output (MIMO) testbed developed through Bristol Is Open in collaboration with National Instruments and Lund University. We believe that the results presented here validate the adoption of massive MIMO as a key enabling technology for 5G and pave the way for further pragmatic research by the massive MIMO community. The testbed operates in real-time with a Long-Term Evolution (LTE)-like PHY in Time Division Duplex (TDD) mode and supports up to 12 spatial streams, providing an excellent basis for comparison with existing standards and complimentary testbeds. Through line-of-sight (LOS) measurements at 3.51 GHz in an indoor atrium environment with 12 user clients, an uncoded system sum-rate of 1.59 Gbps was achieved in real-time using a single 20 MHz LTE band, equating to 79.4 bits/s/Hz. To the best of the author's knowledge, this is the highest spectral efficiency achieved for any wireless system to date.

Original languageEnglish
Title of host publication2016 IEEE Global Communications Conference (GLOBECOM 2016)
Subtitle of host publicationProceedings of a meeting held 4-8 December 2016, Washington, DC, USA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages7
ISBN (Electronic)9781509013289
ISBN (Print)9781509013296
Publication statusPublished - May 2017
Event59th IEEE Global Communications Conference, GLOBECOM 2016 - Washington, United States
Duration: 4 Dec 20168 Dec 2016


Conference59th IEEE Global Communications Conference, GLOBECOM 2016
Country/TerritoryUnited States


  • 5G
  • Field Trial
  • Indoor
  • Massive MIMO
  • Testbed


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