Millimeter Wave Multi-user Performance Evaluation Based on Measured Channels with Virtual Antenna Array Channel Sounder

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Resumé

Virtual antenna arrays are versatile and cost-effective tools for millimeter-wave channel characterization. Massive sampling of the channel in space with virtual antenna arrays enables high spatial resolution in channel sounding. In this paper, a uniform cubic array is used with a vector network analyzer to characterize an indoor propagation channel. The power angle delay profile under line-of-sight (LOS) and obstructed-LOS (OLOS) scenarios is then extracted from the measurement data. The analysis is extended to a multi-user scenario using a virtual uniform rectangular array, which acts as the base station and with users under LOS and OLOS conditions. Results show interference suppression with zero-forcing beamforming that performs well even in critical multi-user scenarios based on the measured channels, i.e., a scenario with closely spaced users in LOS conditions and a scenario with a strong interfering user and a weak desired user.

OriginalsprogEngelsk
TidsskriftIEEE Access
Vol/bind6
Sider (fra-til)12318-12326
Antal sider9
ISSN2169-3536
DOI
StatusUdgivet - 5 mar. 2018

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Antenna arrays
Millimeter waves
Acoustic waves
Interference suppression
Electric network analyzers
Beamforming
Base stations
Sampling
Costs

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title = "Millimeter Wave Multi-user Performance Evaluation Based on Measured Channels with Virtual Antenna Array Channel Sounder",
abstract = "Virtual antenna arrays are versatile and cost-effective tools for millimeter-wave channel characterization. Massive sampling of the channel in space with virtual antenna arrays enables high spatial resolution in channel sounding. In this paper, a uniform cubic array is used with a vector network analyzer to characterize an indoor propagation channel. The power angle delay profile under line-of-sight (LOS) and obstructed-LOS (OLOS) scenarios is then extracted from the measurement data. The analysis is extended to a multi-user scenario using a virtual uniform rectangular array, which acts as the base station and with users under LOS and OLOS conditions. Results show interference suppression with zero-forcing beamforming that performs well even in critical multi-user scenarios based on the measured channels, i.e., a scenario with closely spaced users in LOS conditions and a scenario with a strong interfering user and a weak desired user.",
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Millimeter Wave Multi-user Performance Evaluation Based on Measured Channels with Virtual Antenna Array Channel Sounder. / Mbugua, Allan Wainaina; Fan, Wei; Ji, Yilin; Pedersen, Gert F.

I: IEEE Access, Bind 6, 05.03.2018, s. 12318-12326.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Millimeter Wave Multi-user Performance Evaluation Based on Measured Channels with Virtual Antenna Array Channel Sounder

AU - Mbugua, Allan Wainaina

AU - Fan, Wei

AU - Ji, Yilin

AU - Pedersen, Gert F.

PY - 2018/3/5

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AB - Virtual antenna arrays are versatile and cost-effective tools for millimeter-wave channel characterization. Massive sampling of the channel in space with virtual antenna arrays enables high spatial resolution in channel sounding. In this paper, a uniform cubic array is used with a vector network analyzer to characterize an indoor propagation channel. The power angle delay profile under line-of-sight (LOS) and obstructed-LOS (OLOS) scenarios is then extracted from the measurement data. The analysis is extended to a multi-user scenario using a virtual uniform rectangular array, which acts as the base station and with users under LOS and OLOS conditions. Results show interference suppression with zero-forcing beamforming that performs well even in critical multi-user scenarios based on the measured channels, i.e., a scenario with closely spaced users in LOS conditions and a scenario with a strong interfering user and a weak desired user.

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KW - millimeter wave

KW - radio propagation

KW - virtual antenna array

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