Empirical evaluation of indoor multi-user MIMO channels with linear and planar large antenna arrays

Bei Zhang, Zhangdui Zhong, Bo Ai, Ruisi He, Fredrik Tufvesson, Jose Flordelis, Qi Wang, Jianzhi Li

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Channel measurements of large-scale multiuser multiple-input multiple-output (MU-MIMO) radio propagation channels are presented. In the setup, three users with patch antennas communicate simultaneously with a base station (BS) equipped with a large antenna array in an indoor environment. Both a uniform linear array (ULA) and a uniform planar array (UPA) are used, and their relative ability to separate MU-MIMO signals is examined. At the mobile station (MS) side, the effect of inter-user spacing (i.e., the spacing between different users) is investigated. This evaluation is done by means of the correlation matrix distance metric (between each pair of users) and the singular value spread of the system. Our investigation shows that the users can be spatially separated in a large antenna array system in line-of-sight propagation conditions even when they are located close to each other. Furthermore, the users tend to be more separable when a ULA is adopted, compared to using a UPA. Finally, we also confirm that larger user separation distance results in increased channel orthogonality by measurements.

Original languageEnglish
Title of host publication2017 IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Subtitle of host publicationEngaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
Volume2017-October
ISBN (Electronic)9781538635315
DOIs
Publication statusPublished - 2018 Feb 14
Event28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2017 - Hotel Bonaventure, Montreal, Canada
Duration: 2017 Oct 82017 Oct 13

Conference

Conference28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2017
Abbreviated titlePIMRC
Country/TerritoryCanada
CityMontreal
Period2017/10/082017/10/13

Subject classification (UKÄ)

  • Communication Systems

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