Beamforming Gain Measured on a 5G Test-Bed

This paper presents measurement results from different deployments with a 5G test-bed on a 15-GHz frequency band. The beam gain with a grid-of-beam solution applied to an 8x8 element antenna array is compared with a reference wide-beam power equivalent antenna. The beamforming gain in outdoor enviro...

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Bibliographic Details
Published in2017 IEEE 85th Vehicular Technology Conference (VTC Spring) pp. 1 - 5
Main Authors Simonsson, Arne, Thurfjell, Magnus, Halvarsson, Bjorn, Furuskog, Johan, Wallin, Sten, Itoh, Shoji, Murai, Hideshi, Kurita, Daisuke, Tateishi, Kiichi, Harada, Atsushi, Kishiyama, Yoshihisa
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2017
Subjects
5G mobile communication
Antennas
Array signal processing
Bandwidth
Gain
Gain measurement
OFDM
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Summary:This paper presents measurement results from different deployments with a 5G test-bed on a 15-GHz frequency band. The beam gain with a grid-of-beam solution applied to an 8x8 element antenna array is compared with a reference wide-beam power equivalent antenna. The beamforming gain in outdoor environment is found to be large, it is in the range of 10-13 dB in line-of-sight (LoS) and 7-12 dB in non-LoS. In a reflective and rich indoor environment, the gain is as expected lower but still substantial, 5-11 dB. The potential of a hybrid analog-digital solution is also assessed as an upper bound with perfect phase coherent combination of several beams. To reach an average beamforming gain of 14 dB it is sufficient with the combination of three beams in outdoor LoS, while eight beams are required in the indoor scenario.
DOI:10.1109/VTCSpring.2017.8108648