A Low-Complexity Distributed-MIMO Testbed Based on High-Speed Sigma-Delta-Over-Fiber
Journal article, 2019

Distributed multiple-input-multiple-output (D-MIMO) is a very promising technique to improve capacity and quality of service for emerging 5G systems. In this paper, we propose a flexible and low-cost testbed for D-MIMO systems, where a sigma-delta over fiber (SDoF) solution is proposed to address the fundamental challenge of phase-coherent transmission between multiple distributed access points (APs) from a central unit (CU). Employing low-cost standardized optical data interconnects, SDoF, brings a very flexible and software controlled transmission of RF signals over optical fiber. An SDoF-based D-MIMO testbed with a CU feeding 12 distributed APs has been realized and experimentally evaluated. Initial experiments of D-MIMO and conventional colocated MIMO systems at 2.365 GHz have been performed to demonstrate the flexibility and potential of the proposed testbed as a new powerful tool in the design and analysis of emerging communication system concepts.

sigma-delta modulation (SDM)

Multiple-input-multiple-output (MIMO)

sigma-delta-over-fiber (SDoF)

synchronization

Author

Ibrahim Can Sezgin

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Martin Dahlgren

Syntronic Software Innovations

Thomas Eriksson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Mikael Coldrey

Ericsson

Christina Larsson

Ericsson

Johan Gustavsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN) 15579670 (eISSN)

Vol. 67 7 2861-2872 8678474

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/TMTT.2019.2904265

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Latest update

4/6/2022 1