Evaluation of Distributed MIMO Communication Using a Low-Complexity Sigma-Delta-over-Fiber Testbed
Paper i 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, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Thomas Eriksson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Johan Gustavsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Vol. 2019-June 754-757 8700985

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

Digital Radio-över-Fiber: En ny typ av radiosändare för framtidens trådlösa tillämpningar

Vetenskapsrådet (VR), 2016-01-01 -- 2019-12-31.







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