Evaluation of Distributed MIMO Communication Using a Low-Complexity Sigma-Delta-over-Fiber Testbed
Paper in proceeding, 2019

Distributing the antennas of a base station is a method to increase the coverage and the capacity of a conventional, co-located MIMO communication system. However, physically separated antennas/access points (AP) creates a fundamental challenge of RF phase synchronization required for joint/coordinated transmission in distributed MIMO (D-MIMO) systems. In this paper we compare co-located-and distributed-MIMO wireless communication thru various measurements using a fully synchronized, low-complexity, twelve-channel testbed based on sigma-delta-over-fiber (SDoF). Single and multi-user measurements are performed in a laboratory environment and the error-vector-magnitude (EVM), the received power and signal-to-interference ratio (SIR) is calculated. We show that distributing the access points improves the received symbol EVM up to 1.6-dB and increases the coverage of the service area by delivering more uniform received power levels.

Distributed multiple-input-multiple-output (MIMO)

Distributed multiple-input-single-output (MISO)

Sigma-delta modulation


Ibrahim Can Sezgin

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Thomas Eriksson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Johan Gustavsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Vol. 2019-June 754-757 8700985
978-172811309-8 (ISBN)

2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Boston, USA,

All-Digital Radio-over-Fiber: A New Radio Transmitter Architecture for Future Wireless Applications

Swedish Research Council (VR) (2015-04000), 2016-01-01 -- 2019-12-31.

Subject Categories


Communication Systems

Signal Processing



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