A closed-form approximation of correlated multiuser MIMO ergodic capacity with antenna selection and imperfect channel estimation

Al-Hussaibi, Walid and Ali, Falah H (2018) A closed-form approximation of correlated multiuser MIMO ergodic capacity with antenna selection and imperfect channel estimation. IEEE Transactions on Vehicular Technology, 67 (6). pp. 5515-5519. ISSN 0018-9545

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Abstract

Abstract—Antenna selection (AS) is a promising technology to substantially reduce the complexity of massive multiple-input multiple-output (MIMO) systems. However, spatial correlation and imperfect estimation of channel state information (CSI) are well known to have a direct impact on the capacity of feasible MIMO schemes. In this paper, a tight closed-form approximation of the ergodic capacity for correlated Rayleigh fading multiuser
MIMO channels with receive AS and imperfect CSI is presented. The derived expression takes into account the spatial correlation at both link sides and channel estimation error at the receiver. It can be used for arbitrary numbers of users, antennas, and receive
RF chains. Furthermore, a concise analytical capacity formula is derived in the high signal-to-noise ratio (SNR) region. Numerical results validate the accuracy of our closed-form expressions over different channel conditions and SNRs. The new capacity approximation extends the state-of-the-art and enables efficient
performance evaluation of varied multiantenna applications including massive MIMO for 5G systems.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Communications Research Group
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication Including telegraphy, telephone, radio, radar, television > TK5103.2 Wireless communication systems
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Depositing User: Falah Ali
Date Deposited: 25 May 2018 10:59
Last Modified: 02 Jul 2019 15:15
URI: http://sro.sussex.ac.uk/id/eprint/76108

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