Massive MU-MIMO-OFDM uplink with direct RF-sampling and 1-Bit ADCs
Paper in 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.
Author
Sven Jacobsson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Ericsson
Lise Aabel
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Ericsson
Mikael Coldrey
Ericsson
Ibrahim Can Sezgin
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Giuseppe Durisi
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
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,
All-Digital Radio-over-Fiber: A New Radio Transmitter Architecture for Future Wireless Applications
Swedish Research Council (VR) (2015-04000), 2016-01-01 -- 2019-12-31.
Subject Categories
Telecommunications
Communication Systems
Signal Processing
DOI
10.1109/GCWkshps45667.2019.9024414