Measuring massive MIMO array systems using over the air techniques

Reed, Doug; Rodríguez‐Herrera, Alfonso; Borsato, Ron

doi:10.23919/eucap.2017.7928094

Cited by 13 publications

(12 citation statements)

References 1 publication

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“…It was concluded that the link budget does not support for the measurement distances claimed by the far field criteria [7]. Most antenna array and MIMO related metrices indicate that smaller setup dimension can still yield reasonable measurement accuracy [4,[6][7][8]. The number of required probe antennas depend highly on the considered channel models and probe configurations.…”

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

“…The test zone size in the MPAC setup is defined as a geometry area where enclosed antenna systems can not distinguish the target propagation channel and emulated propagation channels in the MPAC setup [4][5][6]. The test zone size should be larger than the maximum antenna separation on the DUT.…”

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

“…Far field assumption might be violated due to large array aperture of the DUT. The requirement on the physical dimension is extensively investigated in [4,[6][7][8], where the objective is to determine whether the conventional far field criteria must be followed when determining the range of the setup or if they can be relieved. Different FoMs, e.g.…”

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

“…sectorized probe configuration [7,8,[11][12][13], probe selection mechanism with a switch box [12,13], utilization of specular channel models [6,12,13], etc. Moreover, via sacrificing the flexibility and generality in target channel models, large test zone size might be achievable, see some examples in [6,11]. 4) MPAC configuration Two key design parameters for MPAC setup are the number of required OTA antennas and the measurement range (i.e.…”

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

“…Therefore, it is not suitable for testing adaptive antenna systems and the system cost increase significantly if antenna count on the 5G systems is massive. The MPAC method is technically sound for 5G antenna system performance testing, where propagation environments can be physically emulated in the test area [5][6][7][8][9][10][11][12][13]. It is expected that the MPAC setup has the great potential for OTA testing of 5G antenna systems.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Recent advances on OTA testing for 5G antenna systems in multi-probe anechoic chamber setups

Fan

Kyösti²,

Hekkala³

et al. 2017

2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)

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Abstract-Over-the-air (OTA) testing is seen as an essential method for evaluating 5G antenna systems, since conventional cable testing are no longer applicable. In the paper, we discussed the similarities and discrepancies of OTA testing in the multiprobe anechoic chamber (MPAC) setups for 4G user equipment (UE) antenna systems and massive multiple-input multiple-output (MIMO) base station (BS) antenna systems. Further, recent progress on OTA testing for 5G antenna systems in the MPAC setups are summarized.

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Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

Section: Mpac Methods For 4g and 5g Antennasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Recent advances on OTA testing for 5G antenna systems in multi-probe anechoic chamber setups

Fan

Kyösti²,

Hekkala³

et al. 2017

2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP)

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Emulating Dynamic Radio Channels for Radiated Testing of Massive MIMO Devices

Kyösti

Hentilä

Kyrolainen

et al. 2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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This paper discusses a multi-probe anechoic chamber setup, capable of reconstructing non-stationary radio propagation environments for testing of millimetre wave and massive Multiple-Input-Multiple-Output devices. The test setup is aimed for evaluation of end to end performance of devices, including hybrid beamforming operations of antenna arrays and base band processing, in highly time variant channel conditions. In this work we present simulated comparison of an ideal reference radio channel model and corresponding model implemented with limited resources of multi-probe anechoic chamber components. We give a qualitative analysis of the results with non-line of sight channel models, without quantitative evaluation. The example device under test is a 8 × 8 planar array with half wavelength inter-element spacing. Index Terms-Massive MIMO; performance evaluation; over the air testing; multi-probe anechoic chamber setup; mm-wave.

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Plane wave compensation technique for multiple‐input multiple‐output over‐the‐air testing in small multi‐probe anechoic chamber

Wang

Gao

et al. 2019

IET Microwaves, Antennas & Propagation

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Multiple‐input multiple‐output (MIMO) over‐the‐air (OTA) testing is often executed in multi‐probe anechoic chamber (MPAC), the size of which is generally large enough so that the waves radiated from the probes can be considered plane waves in test area. The physical dimension of test setups is a key cost factor. In order to save laboratory space and reduce the cost, a compensation technique for spherical waves synthesising plane waves is proposed, which can be applied in small anechoic chamber. The object is to investigate the performances of the proposed plane wave compensation technique on MIMO terminal OTA testing in small MPAC. In the simulation, this technique presents good performances on various metrics, e.g. field distribution, spatial correlation, power angular spectrum estimation. As demonstrated in simulation, the ring radius of anechoic chamber can be reduced and the conventional far field criteria can be relieved.

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Measuring massive MIMO array systems using over the air techniques

Cited by 13 publications

References 1 publication

Recent advances on OTA testing for 5G antenna systems in multi-probe anechoic chamber setups

Recent advances on OTA testing for 5G antenna systems in multi-probe anechoic chamber setups

Emulating Dynamic Radio Channels for Radiated Testing of Massive MIMO Devices

Plane wave compensation technique for multiple‐input multiple‐output over‐the‐air testing in small multi‐probe anechoic chamber

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