Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems

Seki, Hiroyuki; Masafumi, Tsutsui; Minowa, Morihiko; Shiizaki, Kotaro; Chiyoshi, Akiyama; Okuyama, Toru; Mashino, Jun; Suyama, Satoshi; Okumura, Yukihiko

doi:10.1109/vtcspring.2017.8108652

Cited by 7 publications

(2 citation statements)

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“…In addition to localized Massive MIMO (abovementioned typical Massive MIMO), distributed Massive MIMO technology is being studied by the low-SHF-band experimental trial in collaboration with Fujitsu [24]- [26]. Performance comparison between the localized Massive MIMO and the distributed Massive MIMO were made [25], [26], and the distributed Massive MIMO can achieve higher area spectral efficiency than the distributed Massive MIMO.…”

Section: Overview Of Recent 5g Experimental Trialsmentioning

confidence: 99%

Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Okumura

Suyama

Mashino

et al. 2019

IEICE Trans. Commun.

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In order to cope with recent growth of mobile data traffic and emerging various services, world-wide system trials for the fifthgeneration (5G) mobile communication system that dramatically extends capability of the fourth-generation mobile communication system are being performed to launch its commercial service in 2020. In addition, research and development of new radio access technologies for 5G evolution and beyond 5G systems are beginning to be made all over the world. This paper introduces our recent activities on 5G transmission experiments that aim to validate Massive MIMO technologies using higher frequency bands such as SHF/EHF bands, that is, 5G experimental trials. Recent results of 5G system trials to create new services and applications in 5G era in cooperation with partners in vertical industries are also introduced.

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Section: Overview Of Recent 5g Experimental Trialsmentioning

confidence: 99%

Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Okumura

Suyama

Mashino

et al. 2019

IEICE Trans. Commun.

Self Cite

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“…Although there are many publications on the field trials in the low super-high-frequency (SHF) band, which is the potential candidate frequency band for early commercial services of 5G, [2], [3] focused on the high rank MIMO of a single user equipment (UE), and [4] addressed the throughput performance with fixed TRXs at BS. Some studies, such as [5] and [6], have been made on the performance of coherent joint transmission (JT). In the coherent JT, the antennas used in the beamforming are not colocated but correspond to the locations of APs, and data is transmitted from these noncolocated antennas.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Downlink Multi-User Massive MIMO with Configurable Active Antenna System and Inter Access Point Coordination in Low-SHF-Band

Jiang¹,

Yamazaki²,

Hayata³

et al. 2019

IEICE Trans. Commun.

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Massive multiple input and multiple output (Massive MIMO) is a key technique to achieve high system capacity and user data rate for the fifth generation (5G) radio access network (RAN). To implement Massive MIMO in 5G, how much Massive MIMO meets our expectation with various user equipment (UEs) in different environments should be carefully addressed. We focused on using Massive MIMO in the low super-high-frequency (SHF) band, which is expected to be used for 5G commercial bands relatively soon. We previously developed a prototype low-SHF-band centralized-RAN Massive MIMO system that has a flexible active antenna system (AAS)-unit configuration and facilitates advanced radio coordination features, such as coordinated beamforming (CB) coordinated multi-point (CoMP). In this study, we conduct field trials to evaluate downlink (DL) multiuser (MU)-MIMO performance by using our prototype system in outdoor and indoor environments. The results indicate that about 96% of the maximum total DL system throughput can be achieved with 1 AAS unit outdoors and 2 AAS units indoors. We also investigate channel capacity based on the real propagation channel estimation data measured by the prototype system. Compared with without-CB mode, the channel capacity of with-CB mode increases by a maximum of 80% and 104%, respectively, when the location of UEs are randomly selected in the outdoor and indoor environments. Furthermore, the results from the field trial of with-CB mode with eight UEs indicate that the total DL system throughput and user data rate can be significantly improved.

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Analysis of the Impact of Antenna Arrangement on System Capacity of MU-MIMO in the Presence of Terminal Mobility

Suganuma

Shimbo

Tomeba

et al. 2020

2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall)

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Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems

Cited by 7 publications

References 1 publication

Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Performance Evaluation of Downlink Multi-User Massive MIMO with Configurable Active Antenna System and Inter Access Point Coordination in Low-SHF-Band

Analysis of the Impact of Antenna Arrangement on System Capacity of MU-MIMO in the Presence of Terminal Mobility

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