Automatic Distributed MIMO Testbed for beyond 5G Communication Experiments
Paper in proceeding, 2021

This paper demonstrates an automated testbed suitable for beyond-5G distributed MIMO experiments, where bandwidth, number of transmitters and precoding methods are flexible and configured through a central unit. This is based on an all-digital radio-over-fiber approach to communication through 12 fully coherent, low-complexity remote radio transmitters. An automated robot receiver is implemented to facilitate efficient communication data collection in realistic environments. Using the proposed system, co-located and distributed MIMO communication antenna configurations are compared in a real in-door environment. The results show that distributed MIMO provides more significantly more uniform power distribution and better overall MIMO capacity compared to co-located MIMO.

co-located MIMO

channel capacity

statistical analysis

remote radio head


distributed MIMO


Husileng Bao

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Ibrahim Can Sezgin

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Zhongxia Simon He

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics, Microwave Electronics

Thomas Eriksson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Vol. 2021-June 697-700
9781665403078 (ISBN)

2021 IEEE MTT-S International Microwave Symposium, IMS 2021
Virtual, Atlanta, USA,

Subject Categories


Communication Systems

Signal Processing



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