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Mutual coupling exploitation for point-to-point MIMO by constructive interference

Li, A; Masouros, C; (2017) Mutual coupling exploitation for point-to-point MIMO by constructive interference. In: Communications (ICC), 2017 IEEE International Conference on. IEEE: Paris, France. Green open access

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Abstract

In this paper, we propose a joint analog-digital (A/D) beamforming scheme for the point-to-point (P2P) multiple-input-multiple-output (MIMO) systems, where we exploit the mutual coupling effect to further improve the system performance. By judiciously selecting the value of each load impedance for the antenna array, it will be shown that the mutual coupling effect can be beneficial. We firstly prove that the full elimination of mutual coupling is not achievable solely by changing the values of each load impedance. We further propose a joint A/D technique where the resulting interference aligns constructively to the useful signal vector with the concept of constructive interference. Numerical results show that the proposed schemes can achieve an improved performance compared to systems with fixed mutual coupling, especially when the antenna spacing is small.

Type: Proceedings paper
Title: Mutual coupling exploitation for point-to-point MIMO by constructive interference
Event: 2017 IEEE International Conference on
ISBN-13: 9781467389990
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC.2017.7996579
Publisher version: https://doi.org/10.1109/ICC.2017.7996579
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: MIMO, mutual coupling, constructive interference, optimization
UCL classification: 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/1575386
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