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Large Scale Antenna Selection and Precoding for Interference Exploitation

Amadori, PV; Masouros, C; (2017) Large Scale Antenna Selection and Precoding for Interference Exploitation. IEEE Transactions on Communications , 65 (10) pp. 4529-4542. 10.1109/TCOMM.2017.2720733. Green open access

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Abstract

OAPACRWN We propose several low-complexity Transmit Antenna Selection (TAS) and precoding schemes for Massive multi-input multi-output (M-MIMO). It is well established that large antenna arrays in M-MIMO lead to particularly high hardware overheads as they require an equally large number of radio-frequency chains, and antenna selection is envisaged as a solution to reducing this hardware complexity. Accordingly, in the proposed schemes, both hardware and computational complexity of M-MIMO systems are addressed by jointly optimizing TAS and precoding. We first introduce a mixed-integer programming approach that simultaneously identifies the transmitting antennas subset and solves the precoding problem, by employing a unified metric based on Constructive Interference (CI) concept. We then propose three sub-optimal techniques that allow a reduction of the computational complexity required to solve the joint optimization. Our analyses and results prove that the proposed joint TAS and precoding schemes based on CI exploitation are able to outperform the state-of-the-art, while providing a favorable performance-complexity trade-off.

Type: Article
Title: Large Scale Antenna Selection and Precoding for Interference Exploitation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TCOMM.2017.2720733
Publisher version: http://doi.org/10.1109/TCOMM.2017.2720733
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: Precoding, Interference, Optimization, Transmitting antennas, Antenna arrays, Radio frequency, Measurement
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/1567695
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