Li, A;
Masouros, C;
Li, Y;
Vucetic, B;
(2019)
Interference Exploitation Precoding for Multi-level Modulations.
In:
Proceedings of the ICASSP 2019 - IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2019.
(pp. pp. 4679-4683).
IEEE
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Abstract
In this paper, we investigate the interference exploitation precoding for multi-level modulations in the downlink multi-antenna systems. We mathematically derive the optimal precoding structures based on the Karush-Kuhn-Tucker (KKT) conditions. Furthermore, by formulating the dual problem, the precoding problem for multi-level modulations can be transformed into a pre-scaling operation using quadratic programming (QP) optimization. Compared to the original second-order cone programming (SOCP) formulation, this transformation that finally leads to a QP optimization allows a considerable complexity reduction. Simulation results validate our derivations on the optimal precoding structure, and demonstrate significant performance improvements for interference exploitation precoding over traditional precoding methods for multi-level modulations.
| Type: | Proceedings paper |
|---|---|
| Title: | Interference Exploitation Precoding for Multi-level Modulations |
| Event: | IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2019 |
| Location: | Brighton, United Kingdom |
| Dates: | 12th-17th May 2019 |
| ISBN-13: | 978-1-4799-8131-1 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ICASSP.2019.8683216 |
| Publisher version: | https://doi.org/10.1109/ICASSP.2019.8683216 |
| 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: | interference (signal), precoding, quadratic programming |
| 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/10082583 |
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