Li, A;
Masouros, C;
Swindlehurst, AL;
(2018)
1-Bit Massive MIMO Downlink Based on Constructive Interference.
In:
2018 26th European Signal Processing Conference (EUSIPCO).
(pp. pp. 927-931).
IEEE
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Abstract
In this paper, we focus on the multiuser massive multiple-input single output (MISO) downlink with low-cost 1- bit digital-to-analog converters (DACs) for PSK modulation, and propose a low-complexity refinement process that is applicable to any existing 1-bit precoding approaches based on the constructive interference (CI) formulation. With the decomposition of the signals along the detection thresholds, we first formulate a simple symbol-scaling method as the performance metric. The low-complexity refinement approach is subsequently introduced, where we aim to improve the introduced symbol-scaling performance metric by modifying the transmit signal on one antenna at a time. Numerical results validate the effectiveness of the proposed refinement method on existing approaches for massive MIMO with 1-bit DACs, and the performance improvements are most significant for the low complexity quantized zero-forcing (ZF) method.
| Type: | Proceedings paper |
|---|---|
| Title: | 1-Bit Massive MIMO Downlink Based on Constructive Interference |
| Event: | 26th European Signal Processing Conference (EUSIPCO), 3-7 September 2018, Roma, Italy |
| ISBN-13: | 978-9-0827-9701-5 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.23919/EUSIPCO.2018.8553556 |
| Publisher version: | https://doi.org/10.23919/EUSIPCO.2018.8553556 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Massive MIMO, 1-bit quantization, refinement, constructive interference |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10060105 |
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