Numerical Analysis of the Decomposition Method Using LTE Reference Antennas

Auinger, Bernhard; Gadringer, Michael Ernst; Tankielun, Adam; Gagern, Christoph; Bösch, Wolfgang

doi:10.7763/jacn.2015.v3.165

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…where is the length of the pilot sequence and /( 0 ) is the symbol energy to the noise energy (SNR (26) per estimation [3,35]. With (25) and (26), the channel estimation error variance 2 est_err can be calculated as…”

Section: Lte As a Showcase For Mimo Enabled Communicationmentioning

confidence: 99%

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Validation of the Decomposition Method for Fast MIMO Over-the-Air Measurements

Auinger

Zemen

Gadringer

et al. 2017

International Journal of Antennas and Propagation

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Over-the-air (OTA) throughput tests of wireless Multiple-Input Multiple-Output (MIMO) devices are an important tool for network operators and manufacturers. The user equipment (UE) is placed in an anechoic chamber and a random fading process is emulated by a base-station emulator (BSE). The antenna characteristic of the UE is taken into account by sampling the sphere around the UE with the BSE test antenna at a large number of positions. For low-variance throughput results, long measurement intervals over many fading realizations are required, leading to long and expensive measurement periods in an anechoic chamber. To speed up the OTA test, we analyze the Decomposition Method (DM). The DM splits the throughput measurement into two parts: (1) a receiver algorithm performance tests taking the fading process into account and (2) an antenna performance test without fading process emulation. Both results are combined into a single throughput estimate. The DM allows for a measurement time reduction of more than one order of magnitude. We provide an analytic and numerical analysis as well as measurements. Our detailed results show the validity of the DM in all practical settings.

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Section: Lte As a Showcase For Mimo Enabled Communicationmentioning

confidence: 99%

“…Measurement setup employing Two-Channel Method for the static radiated tests of the DM; BSE without channel emulator[25].…”

mentioning

confidence: 99%

Validation of the Decomposition Method for Fast MIMO Over-the-Air Measurements

Auinger

Zemen

Gadringer

et al. 2017

International Journal of Antennas and Propagation

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“…Other Methods in MPAC Setups [2], [3], [14] The radiated two-stage method was proposed in [3], where the second stage was performed in the MPAC setup. Compared to the previously discussed methods, a nonintrusive, complex radiation-pattern measurement of antennas on the DUT in the first stage is required.…”

Section: Prefaded Signal Synthesis Technique [4]mentioning

confidence: 99%

“…The decomposition method decomposes MIMO device testing into radiated and conducted tests where only the device front ends, including antennas, are tested in a radiated manner without fading channels [2], [14]. Like the two-stage method, the test-area size is unlimited and the required number of probes is equal to the number of Rx antennas on the DUT with the decomposition method.…”

Section: Prefaded Signal Synthesis Technique [4]mentioning

confidence: 99%

Over-the-Air Testing of MIMO-Capable Terminals: Evaluation of Multiple-Antenna Systems in Realistic Multipath Propagation Environments Using an OTA Method

Fan

Carreño²,

Kyösti³

et al. 2015

IEEE Veh. Technol. Mag.

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Over-the-Air Testing of MiMO-Capable Terminals new over-the-air (OTA) testing method is required for evaluating multiple-antenna systems in realistic multipath propagation environments. Antenna design and propagation channels are the two key parameters that ultimately determine the multiple-input, multiple-output (MIMO) device performance. As antennas are inherently included in OTA testing, it is important to also consider realistic channel models for MIMO device-performance evaluation. This article shows that the multiprobe anechoic chamber (MPAC) setup is capable of emulating realistic and accurate multipath environments, making it a suitable method for testing terminals equipped with multiple antennas. In comparison to the mode-stirred reverberation chamber (RC) setup that represents an isotropic multipath environment, the MPAC method is capable of generating arbitrary spatial channel models with polarization characteristics. This article addresses some of the key aspects associated with MPAC systems, such as methods to reproduce spatial channel

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Numerical Analysis of the Decomposition Method Using LTE Reference Antennas

Cited by 2 publications

References 3 publications

Validation of the Decomposition Method for Fast MIMO Over-the-Air Measurements

Validation of the Decomposition Method for Fast MIMO Over-the-Air Measurements

Over-the-Air Testing of MIMO-Capable Terminals: Evaluation of Multiple-Antenna Systems in Realistic Multipath Propagation Environments Using an OTA Method

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