Massive multiple-input multiple-out (MIMO) technology is vital in millimeter-wave (mmWave) bands to obtain large array gains. However, there are practical challenges, such as high hardware cost and power consumption in such systems. A promising solution to these problems is to adopt a hybrid beamforming architecture. This architecture has a much lower number of transceiver (TRx) chains than the total antenna number, resulting in cost- and energy-efficient systems. In this paper, we present a real-time mmWave (28GHz) massive MIMO testbed with hybrid beamforming. This testbed has a 64-antenna/16-TRx unit for beam-selection, which can be expanded to larger array sizes in a modular way. For testing everything from baseband processing algorithms to scheduling and beam-selection in real propagation environments, we extend the capability of an existing 100-antenna/100-TRx massive MIMO testbed (below 6GHz), built upon software-defined radio technology, to a flexible mmWave massive MIMO system.
|Titel||Conference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020|
|Redaktører||Michael B. Matthews|
|Forlag||IEEE Computer Society Press|
|Publikationsdato||1 nov. 2020|
|Status||Udgivet - 1 nov. 2020|
|Begivenhed||54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020 - Pacific Grove, USA|
Varighed: 1 nov. 2020 → 5 nov. 2020
|Konference||54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020|
|Periode||01/11/2020 → 05/11/2020|
|Navn||Conference Record - Asilomar Conference on Signals, Systems and Computers|
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