IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond
High Speed Mobility Experiments on Distributed MIMO Beamforming for 5G Radio Access in 28-GHz Band
Daisuke KITAYAMAKiichi TATEISHIDaisuke KURITAAtsushi HARADAMinoru INOMATATetsuro IMAIYoshihisa KISHIYAMAHideshi MURAIShoji ITOHArne SIMONSSONPeter ÖKVIST
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2019 Volume E102.B Issue 8 Pages 1418-1426

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Abstract

This paper describes the results of outdoor mobility measurements and high-speed vehicle tests that clarify the 4-by-8 multiple-input multiple-output (MIMO) throughput performance when applying distributed MIMO with narrow antenna-beam tracking in a 28-GHz frequency band in the downlink of a 5G cellular radio access system. To clarify suitable transmission point (TP) deployment for mobile stations (MS) moving at high speed, we examine two arrangements for 3TPs. The first sets all TPs in a line along the same side of the path traversed by the MS, and the other sets one TP on the other side of the path. The experiments in which the MS is installed on a moving wagon reveal that the latter deployment case enables a high peak data rate and high average throughput performance exhibiting the peak throughput of 15Gbps at the vehicle speed of 3km/h. Setting the MS in a vehicle travelling at 30km/h yielded the peak throughput of 13Gbps. The peak throughput of 11Gbps is achieved at the vehicle speed of 100km/h, and beam tracking and intra-baseband unit hand over operation are successfully demonstrated even at this high vehicle speed.

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© 2019 The Institute of Electronics, Information and Communication Engineers
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