Massive MU-MIMO-OFDM uplink with direct RF-sampling and 1-Bit ADCs
Paper in proceedings, 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 and Antenna Systems, Communication Systems

Ericsson

Lise Aabel

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

Ericsson

Mikael Coldrey

Ericsson

Ibrahim Can Sezgin

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics, Microwave Electronics

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics, Microwave Electronics

Giuseppe Durisi

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

Christoph Studer

Cornell Tech

2019 IEEE Globecom Workshops, GC Wkshps 2019 - Proceedings

9024414

2019 IEEE Globecom Workshops, GC Wkshps 2019
Waikoloa, USA,

All-Digital Radio-over-Fiber: A New Radio Transmitter Architecture for Future Wireless Applications

Swedish Research Council (VR), 2016-01-01 -- 2019-12-31.

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/GCWkshps45667.2019.9024414

More information

Latest update

9/18/2020