Qian, J;
Masouros, C;
Garcia-Rodriguez, A;
(2018)
Partial CSI Acquisition for Size-Constrained Massive MIMO Systems with User Mobility.
IEEE Transactions on Vehicular Technology
, 67
(9)
pp. 9016-9020.
10.1109/TVT.2018.2849263.
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Abstract
IEEE We propose a low-complexity approach for the downlink of physically-constrained massive multiple-input multiple-output (MIMO) systems with user mobility. We examine a channel state information (CSI) acquisition strategy that exploits both the spatial and temporal correlation among the channels of adjacent base station antennas. The proposed strategy solely collects CSI for a subset of antennas and time frames. Then full CSI is approximated using CSI of adjacent antennas and previous frames. This critically reduces the CSI acquisition complexity while sacrificing CSI quality, and hence introduces a scalable performance-complexity tradeoff. The numerical results demonstrate that, for practical mobile speeds, the proposed scheme reduces the computational complexity and enhances the energy efficiency of massive MIMO base stations against systems with complete CSI, while approximately preserving performance.
| Type: | Article |
|---|---|
| Title: | Partial CSI Acquisition for Size-Constrained Massive MIMO Systems with User Mobility |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TVT.2018.2849263 |
| Publisher version: | https://doi.org/10.1109/TVT.2018.2849263 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/. |
| Keywords: | Massive MIMO, partial CSI, temporal and spatial correlations, energy 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/10052719 |
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