All-Digital Massive MIMO Uplink and Downlink Rates under a Fronthaul Constraint
Paper in proceedings, 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.

Author

Yasaman Ettefagh

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Sven Jacobsson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Anzhong Hu

Giuseppe Durisi

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Christoph Studer

Conference Record - Asilomar Conference on Signals, Systems and Computers

10586393 (ISSN)

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

Subject Categories

Telecommunications

Communication Systems

Signal Processing

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Created

1/7/2020 2