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. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
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 : 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 Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
Identification Number or DOI: 10.1109/GLOCOMW.2013.6824973
URI: http://eprints.usq.edu.au/id/eprint/26487

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