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Interference Exploitation-Based Hybrid Precoding With Robustness Against Channel Errors

Fan, Y; Hegde, G; Masouros, C; Pesavento, M; (2020) Interference Exploitation-Based Hybrid Precoding With Robustness Against Channel Errors. In: Proceedings of the 2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM). IEEE: Hangzhou, China. Green open access

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Abstract

The extremely high cost associated with massive multiple-input multiple-output (MIMO) systems when it is employed with fully digital precoding can be reduced by applying hybrid precoding at an expense of increased transmit power. In such a hybrid precoding system, the transmit power required to achieve a certain quality-of-service (QoS) can be significantly reduced by employing the constructive interference (CI) precoding technique. However, as illustrated in the paper, the symbol error rate (SER) performance of CI-based precoding is very sensitive to channel errors. To address this challenge we propose a hybrid precoding approach with robustness against channel quantization error and channel estimation error. Simulation results demonstrate the superior energy efficiency of the proposed robust hybrid precoding when compared to that of a conventional non-robust precoding scheme in achieving a required QoS target.

Type: Proceedings paper
Title: Interference Exploitation-Based Hybrid Precoding With Robustness Against Channel Errors
Event: 2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)
ISBN-13: 9781728119465
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/SAM48682.2020.9104323
Publisher version: https://doi.org/10.1109/SAM48682.2020.9104323
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: massive MIMO, hybrid precoding, optimization, robust precoding, imperfect channel knowledge
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/10113970
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