Multiuser hybrid analog/digital beamforming for relatively large-scale antenna arrays

Geng, Jian and Wei, Zaixue and Wang, Xianling and Xiang, Wei and Yang, Dacheng (2013) Multiuser hybrid analog/digital beamforming for relatively large-scale antenna arrays. In: IEEE Globecom Workshops (GLOBECOM 2013), 9-13 Dec 2013, Atlanta, GA. United States.


Abstract

Power consumption and costs of the analog front-end (AFE) chains are often not negligible for large-scale antenna array systems. A low-complexity hardware architecture is to use a number of AFE chains that is less than the number of the antennas. Beamforming for this low-complexity hardware architecture involves both digital and analog beamforming, which is termed hybrid analog/digital beamforming. This paper focuses on the optimization for hybrid analog/digital beamforming to minimize the transmit power subject to the signal-to- interference-plus-noise-ratio (SINR) constraints. Properties on the feasibility and optimum of the considered problem are derived. Numerical algorithm based on semi-definite positive (SDP) relaxation is proposed in an attempt to solve the optimization problem. Numerical simulations show that the performance of hybrid analog/digital beamforming is highly related to the correlation of the channel coefficients of different subcarriers.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Date Deposited: 19 Dec 2014 07:05
Last Modified: 07 Aug 2017 04:25
Uncontrolled Keywords: algorithms; antenna arrays; chains; optimization; signal interference; spurious signal noise
Fields of Research (2008): 10 Technology > 1005 Communications Technologies > 100503 Computer Communications Networks
10 Technology > 1005 Communications Technologies > 100501 Antennas and Propagation
10 Technology > 1006 Computer Hardware > 100606 Processor Architectures
09 Engineering > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
Identification Number or DOI: https://doi.org/10.1109/GLOCOMW.2013.6824973
URI: http://eprints.usq.edu.au/id/eprint/26487

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