Li, A;
Masouros, C;
Liu, F;
(2018)
Hybrid Analog-Digital Precoding for Interference Exploitation.
In:
2018 26th European Signal Processing Conference (EUSIPCO).
(pp. pp. 812-816).
IEEE
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Abstract
We study the multi-user massive multiple-inputsingle-output (MISO) and focus on the downlink systems where the base station (BS) employs hybrid analog-digital precoding with low-cost 1-bit digital-to-analog converters (DACs). In this paper, we propose a hybrid downlink transmission scheme where the analog precoder is formed based on the SVD decomposition. In the digital domain, instead of designing a linear transmit precoding matrix, we directly design the transmit signals by exploiting the concept of constructive interference. The optimization problem is then formulated based on the geometry of the modulation constellations and is shown to be non-convex. We relax the above optimization and show that the relaxed optimization can be transformed into a linear programming that can be efficiently solved. Numerical results validate the superiority of the proposed scheme for the hybrid massive MIMO downlink systems.
| Type: | Proceedings paper |
|---|---|
| Title: | Hybrid Analog-Digital Precoding for Interference Exploitation |
| 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.2018.8553509 |
| Publisher version: | https://doi.org/10.23919/EUSIPCO.2018.8553509 |
| 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, hybrid precoding, constructive interference, downlink |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices 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/10060104 |
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