All-Digital Massive MIMO Uplink and Downlink Rates under a Fronthaul Constraint
Paper i proceeding, 2019

We characterize the rate achievable in a bidirectional quasi-static link where several user equipments communicate with a massive multiple-input multiple-output base station (BS). In the considered setup, the BS operates in full-digital mode, the physical size of the antenna array is limited, and there exists a rate constraint on the fronthaul interface connecting the (possibly remote) radio head to the digital baseband processing unit. Our analysis enables us to determine the optimal resolution of the analog-todigital and digital-to-analog converters as well as the optimal number of active antenna elements to be used in order to maximize the transmission rate on the bidirectional link, for a given constraint on the outage probability and on the fronthaul rate. We investigate both the case in which perfect channel-state information is available, and the case in which channel-state information is acquired through pilot transmission, and is, hence, imperfect. For the second case, we present a novel rate expression that relies on the generalized mutual-information framework.


Yasaman Ettefagh

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Sven Jacobsson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Anzhong Hu

Hangzhou Dianzi University

Giuseppe Durisi

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Christoph Studer

Cornell Tech

Conference Record - Asilomar Conference on Signals, Systems and Computers

10586393 (ISSN)

53rd Asilomar Conference on Signals, Systems, and Computers, 2019
, USA,









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