Li, A;
Liu, F;
Masouros, C;
Li, Y;
Vucetic, B;
(2020)
Near-optimal Interference Exploitation 1-bit Massive Mimo Precoding via Partial Branch-and-bound.
In:
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).
(pp. pp. 8941-8945).
IEEE: Barcelona, Spain.
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Abstract
In this paper, we focus on 1-bit precoding for large-scale antenna systems in the downlink based on the concept of constructive interference (CI). By formulating the optimization problem that aims to maximize the CI effect subject to the 1-bit constraint on the transmit signals, we mathematically prove that, when relaxing the 1-bit constraint, the majority of the obtained transmit signals already satisfy the 1-bit constraint. Based on this important observation, we propose a 1-bit precoding method via a partial branch-and-bound (P-BB) approach, where the BB procedure is only performed for the entries that do not comply with the 1-bit constraint. The proposed P-BB enables the use of the BB framework in large-scale antenna scenarios, which was not applicable due to its prohibitive complexity. Numerical results demonstrate a near-optimal error rate performance for the proposed 1-bit precoding algorithm.
| Type: | Proceedings paper |
|---|---|
| Title: | Near-optimal Interference Exploitation 1-bit Massive Mimo Precoding via Partial Branch-and-bound |
| Event: | ICASSP 2020 |
| Location: | Barcelona |
| Dates: | 04 May 2020 - 08 May 2020 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICASSP40776.2020.9053948 |
| Publisher version: | https://doi.org/10.1109/ICASSP40776.2020.9053948 |
| 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 |
| 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-pp.ucl.ac.uk/id/eprint/10091436 |
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