Massive MU-MIMO-OFDM uplink with direct RF-sampling and 1-Bit ADCs
Paper i proceeding, 2019
Advances in analog-to-digital converter (ADC) technology have opened up the possibility to directly digitize wideband radio frequency (RF) signals, avoiding the need for analog down- conversion. In this work, we consider an orthogonal frequency- division multiplexing (OFDM)-based massive multi-user (MU) multiple-input multiple-output (MIMO) uplink system that relies on direct RF-sampling at the base station and digitizes the received RF signals with 1-bit ADCs. Using Bussgang's theorem, we provide an analytical expression for the error-vector magnitude (EVM) achieved by digital down-conversion and zero-forcing combining. Our results demonstrate that direct RF-sampling 1-bit ADCs enables low EVM and supports high-order constellations in the massive MU-MIMO- OFDM uplink.
Författare
Sven Jacobsson
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
Ericsson AB
Lise Aabel
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
Ericsson AB
Mikael Coldrey
Ericsson AB
Ibrahim Can Sezgin
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Christian Fager
Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik
Giuseppe Durisi
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
Christoph Studer
Cornell Tech
2019 IEEE Globecom Workshops, GC Wkshps 2019 - Proceedings
9024414
978-172810960-2 (ISBN)
2019 IEEE Globecom Workshops, GC Wkshps 2019
Waikoloa, USA,
Waikoloa, USA,
Digital Radio-över-Fiber: En ny typ av radiosändare för framtidens trådlösa tillämpningar
Vetenskapsrådet (VR) (2015-04000), 2016-01-01 -- 2019-12-31.
Ämneskategorier
Telekommunikation
Kommunikationssystem
Signalbehandling
DOI
10.1109/GCWkshps45667.2019.9024414