Hybrid precoding and combining design for millimeter-wave multi-user MIMO based on SVD

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Hybrid precoding and combining design for millimeter-wave multi-user MIMO based on SVD

Li, A; Masouros, C; (2017) Hybrid precoding and combining design for millimeter-wave multi-user MIMO based on SVD. In: Communications (ICC), 2017 IEEE International Conference on. IEEE: Paris, France. Green open access

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Abstract

In this paper, we focus on the millimeter-wave multi-user multiple-input-multiple-output (mmWave MU-MIMO) systems and propose a low-complexity hybrid precoding and combining design, which is applicable to both fully-connected structures and sub-connected structures. Based on the channel knowledge of each user, the analog combiner for each user is independently designed based on the singular value decomposition (SVD), while the analog precoder is obtained by the conjugate transposition to maximize the effective channel gain. Then, with the resulting effective analog channel, low-dimensional baseband precoders can be efficiently applied. The proposed scheme requires no optimization techniques or any complicated iterative algorithms, while the numerical results show that it can approach the performance of fully digital schemes and even achieve a better performance in some scenarios. It is also observed that sub-connected structures can achieve a much higher power efficiency compared to fully-connected structures and are therefore promising for the future green communication systems.

Type:	Proceedings paper
Title:	Hybrid precoding and combining design for millimeter-wave multi-user MIMO based on SVD
ISBN-13:	9781467389990
Open access status:	An open access version is available from UCL Discovery
DOI:	10.1109/ICC.2017.7996970
Publisher version:	https://doi.org/10.1109/ICC.2017.7996970
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:	Millimeter-Wave, MU-MIMO, hybrid design, SVD, power efficiency
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/1575387