A Flexible Millimeter Wave Radio Channel Emulator Design with Experimental Validations

Wei Fan, Pekka Kyösti, Lassi Hentilä, Gert F. Pedersen

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Millimeter wave (mmWave) channel emulator (CE)
is an essential tool for air interface testing of the upcoming
mmWave communication systems. A flexible CE, which is capable
of frequency setting from sub-6 GHz to mmWave bands and
flexible system bandwidth setting, is highly desirable. This is due
to the fact that potential frequency bands and system bandwidths
are undecided for mmWave systems and it is likely that multibands
with scalable system bandwidths will be supported. In this
paper, a frequency extension scheme based on frequency up-anddown
conversion, and a novel bandwidth enhancement scheme
based on the band-combining principle, are proposed to upgrade
existing sub-6GHz CE to meet the requirements in the mmWave
CE design. The designed mmWave CE is experimentally validated,
where the measured Doppler and delay profiles agree
well with the target ones. Moreover, the beamforming validation
measurements showed that excellent gain and phase control of
the mmWave CE output ports can be realized.
Original languageEnglish
Article number8429507
JournalI E E E Transactions on Antennas and Propagation
Volume66
Issue number11
Pages (from-to)6446-6451
Number of pages6
ISSN0018-926X
DOIs
Publication statusPublished - Nov 2018

Fingerprint

Millimeter waves
Bandwidth
Phase control
Gain control
Beamforming
Frequency bands
Communication systems
Testing
Air

Keywords

  • Multipath channels
  • radio propagation
  • testing

Cite this

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title = "A Flexible Millimeter Wave Radio Channel Emulator Design with Experimental Validations",
abstract = "Millimeter wave (mmWave) channel emulator (CE)is an essential tool for air interface testing of the upcomingmmWave communication systems. A flexible CE, which is capableof frequency setting from sub-6 GHz to mmWave bands andflexible system bandwidth setting, is highly desirable. This is dueto the fact that potential frequency bands and system bandwidthsare undecided for mmWave systems and it is likely that multibandswith scalable system bandwidths will be supported. In thispaper, a frequency extension scheme based on frequency up-anddownconversion, and a novel bandwidth enhancement schemebased on the band-combining principle, are proposed to upgradeexisting sub-6GHz CE to meet the requirements in the mmWaveCE design. The designed mmWave CE is experimentally validated,where the measured Doppler and delay profiles agreewell with the target ones. Moreover, the beamforming validationmeasurements showed that excellent gain and phase control ofthe mmWave CE output ports can be realized.",
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A Flexible Millimeter Wave Radio Channel Emulator Design with Experimental Validations. / Fan, Wei; Kyösti, Pekka; Hentilä, Lassi; Pedersen, Gert F.

In: I E E E Transactions on Antennas and Propagation, Vol. 66, No. 11, 8429507, 11.2018, p. 6446-6451.

Research output: Contribution to journalJournal articleResearchpeer-review

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