Published IEEE-TVT- A Closed Form MIMO Capacity_VT-2017-00591.pdf (202.9 kB)
A closed-form approximation of correlated multiuser MIMO ergodic capacity with antenna selection and imperfect channel estimation
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.
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Publication status
- Published
File Version
- Accepted version
Journal
IEEE Transactions on Vehicular TechnologyISSN
0018-9545Publisher
Institute of Electrical and Electronics EngineersExternal DOI
Issue
6Volume
67Page range
5515-5519Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Communications Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-05-25First Open Access (FOA) Date
2018-05-25First Compliant Deposit (FCD) Date
2018-05-24Usage metrics
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