Distributed Massive MIMO via all-Digital Radio Over Fiber
Paper i proceeding, 2020

A crucial challenge in the implementation of distributed massive multiple-input multiple-output (MIMO) architectures is to provide phase coherence while, at the same time, limit the complexity of the remote-radio heads (RRHs), which is important for cost-efficient scalability. To address this challenge, we present in this paper a phase-coherent distributed MIMO architecture, based on off-the-shelf, low-cost components. In the proposed architecture, up- and down-conversion are carried out at the central unit (CU). The RRHs are connected to the CU by means of optical fibers carrying oversampled radio-frequency (RF) 1-bit signals. In the downlink, the 1-bit signal is generated via sigma-delta modulation. At the RRH, the RF signal is recovered from the 1-bit signal through a bandpass filter and a power amplifier, and then fed to an antenna. In the uplink, the 1-bit signal is generated by a comparator whose inputs are the low-noise-amplified received RF signal and a suitably designed dither signal. The performance of the proposed architecture is evaluated with satisfactory results both via simulation and measurements from a testbed.

Författare

Lise Aabel

Ericsson AB

Giuseppe Durisi

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Ibrahim Can Sezgin

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

Sven Jacobsson

Ericsson AB

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Mikael Coldrey

Ericsson AB

Conference Record - Asilomar Conference on Signals, Systems and Computers

10586393 (ISSN)

Vol. 2020-November 319-323 9443347

2020 Asilomar Conference on Signals, Systems and Computers
Pacific Grove, USA,

Distributed massive MIMO with low-precision components

Stiftelsen för Strategisk forskning (SSF), 2020-03-01 -- 2024-12-09.

Integrated Antenna Arrays (VINNOVA Competence Center ChaseOn)

VINNOVA, 2016-01-01 -- 2021-12-31.

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/IEEECONF51394.2020.9443347

Mer information

Senast uppdaterat

2021-06-24