Massive MU-MIMO-OFDM Downlink with One-Bit DACs and Linear Precoding
Paper in proceeding, 2018

Massive multiuser (MU) multiple-input multiple- output (MIMO) is foreseen to be a key technology in future wireless communication systems. In this paper, we analyze the downlink performance of an orthogonal frequency division multiplexing (OFDM)-based massive MU-MIMO system in which the base station (BS) is equipped with 1-bit digital-to-analog converters (DACs). Using Bussgang’s theorem, we characterize the performance achievable with linear precoders (such as maximal-ratio transmission and zero forcing) in terms of bit error rate (BER). Our analysis accounts for the possibility of oversampling the time-domain transmit signal before the DACs. We further develop a lower bound on the information-theoretic sum-rate throughput achievable with Gaussian inputs. Our results suggest that the performance achievable with 1-bit DACs in a massive MU-MIMO-OFDM downlink are satisfactory provided that the number of BS antennas is sufficiently large.


Sven Jacobsson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Giuseppe Durisi

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Mikael Coldrey


Christoph Studer

Cornell University

GLOBECOM 2017 - 2017 IEEE Global Communications Conference (GLOBECOM)

978-1-5090-5020-8 (ISBN)

Massive MIMO systems with low-resolution converters

Swedish Foundation for Strategic Research (SSF) (ID14-0022), 2015-03-01 -- 2020-02-28.

Areas of Advance

Information and Communication Technology


C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Communication Systems



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