Li, A;
Masouros, C;
Sellathurai, M;
(2017)
Analog-Digital Beamforming for Tunable-Load MIMO by Mutual Coupling Exploitation.
In:
2017 IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC).
IEEE
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Abstract
In this paper, we propose a joint analog-digital (AD) beamforming scheme that exploits the mutual coupling effect to further improve the performance of multi-user multiple-input single-output (MU-MISO) systems. We firstly propose a joint AD scheme by iteratively optimizing the beamforming vectors in the digital domain and the load impedances of each antenna element in the analog domain. We further propose a low-complexity decoupled AD scheme, where the mutual coupling exploitation can be efficiently applied upon existing beamformers. The practical implementation of the proposed schemes is also discussed. Numerical results show that the proposed schemes can achieve an improved performance compared to the case with fixed mutual coupling.
| Type: | Proceedings paper |
|---|---|
| Title: | Analog-Digital Beamforming for Tunable-Load MIMO by Mutual Coupling Exploitation |
| Event: | SPAWC 2017, 18th IEEE International Workshop on Signal Processing Advances for Wireless Communications, 3-6 July 2017, Sapporo, Japan |
| Location: | Sapporo, JAPAN |
| Dates: | 03 July 2017 - 06 July 2017 |
| ISBN-13: | 9781509030095 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/SPAWC.2017.8227792 |
| Publisher version: | https://doi.org/10.1109/SPAWC.2017.8227792 |
| 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: | MU-MISO, mutual coupling, analog-digital beamforming, joint optimization |
| 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/10058941 |
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