Simulation-based Investigation on Spatial Channel Hardening of Massive MIMO in Different Indoor Scenarios and with Different Array Topologies

Chunxia Qin*, Yang Miao, Y. Gao, Jiming Chen, Jie Zhang, Andrés Alayón Glazunov

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Spatial channel hardening is one of the key properties of a massive MIMO system. In this paper, we investigate the spatial channel hardening based on ray tracing channel simulations with different array antenna topologies deployed in different radio wave propagation conditions. Investigated are 9 different indoor deployment scenarios of massive MIMO. Considered are the empty room, the rich-furniture room and the room-to-room scenarios, where massive multi-antennas are deployed in the co-located, the split and the cell-free array topologies. The simulation results show that the cell-free topology results in the most-spatially-hardened channel in target area, while the co-located antennas the least-spatially-hardened. It is also found that the convergence of channel spatial variations is consistent with the number of paths estimated in multipath scenarios, i.e., the more multipath components are estimated in a propagation scenario, the smaller the number of antennas is required for the channel to reach the spatially hardened state. In our simulations, the rom-to-room scenario leads to the most-spatially-hardened channel, while for the empty room scenario it is the opposite.
Original languageEnglish
Title of host publication2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science
PublisherIEEE
Number of pages4
ISBN (Electronic)978-9-4639-6800-3
DOIs
Publication statusAccepted/In press - Oct 2020
Event2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science - Online event, Rome, Italy
Duration: 29 Aug 20205 Sep 2020
Conference number: 33

Conference

Conference2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science
CountryItaly
CityRome
Period29/08/205/09/20

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