Reverberation chambers for testing wireless devices and systems

Primiani, Valter Mariani; Barazzetta, Massimo; Bastianelli, Luca; Micheli, Davide; Moglie, E.; Diamanti, Riccardo; Gradoni, Gabriele

doi:10.1109/memc.2020.9133241

Cited by 21 publications

(18 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Testing of wireless communication system and device in RC is nowadays considered very powerful from both mobile operator and BS manufacturing point of view [19]. In fact, the RC is able to provide very rich multipath propagation environment, capable to stress the connection between the BS and UE(s) [11,20,21].…”

Section: Experimental Set-up and Resultsmentioning

confidence: 99%

Test of 5G System in the Reverberation Chamber at mm-wave

Micheli¹,

Diamanti²,

Bastianelli³

et al. 2023

Preprint

View full text Add to dashboard Cite

The performance of a real fifth generation base station was studied by using a reverberation chamber as a real life propagating environment. Preliminary tests were conducted in order to define 5G base station operation conditions at mm-wave and emulated scenarios where reconfigurable intelligent surface(s) (RISs) will successively be tested. Measurements campaign was carried out under the H2020 European project RISE-6G and a collaboration program between TIM S.p.A.,

show abstract

Section: Experimental Set-up and Resultsmentioning

confidence: 99%

Test of 5G System in the Reverberation Chamber at mm-wave

Micheli¹,

Diamanti²,

Bastianelli³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…where 𝑛 ∈ {1, 2, 3, 4}. Finally, the sample mean (i.e., 𝑋) is computed from the 4 estimates, (6), to obtain Bcoh@37% . The largest CB, 𝐵 coh | max , among all possible configurations of ( 𝑓 𝑐 , 𝜔, fully loaded VIRC) is defined for a threshold = 1/e ≈ 37%.…”

Section: B 2 Nd -Order Spectral Characteristics-methodologymentioning

confidence: 99%

“…Such a chamber has been used mainly in EMC to conduct, e.g., shielding effectiveness and radiated emission measurements [3]. In the last two decades, nevertheless, RCs have become an indispensable OTA-testing tool in research and development, namely OTA testing of wireless baseband algorithms [4], OTA-based antenna measurements [5], and OTA testing of wireless devices (i.e., baseband algorithms and antennas combined) [6].…”

Section: Introductionmentioning

confidence: 99%

Empirical Characterization and Modeling of a Propagation Channel inside the VIRC

Mahfouz¹,

Vogt-Ardatjew²,

Kokkeler³

et al. 2022

Preprint

View full text Add to dashboard Cite

<p>Electromagnetic compatibility (EMC) measurements and over-the-air (OTA) testing are widely performed in classical reverberation chambers. A less-known reverberation chamber, yet a rather efficient environment for generating multipath conditions, is the Vibrating Intrinsic Reverberation Chamber (VIRC), which is yet to be fully characterized. Therefore, this article thoroughly investigates a propagation channel inside a VIRC in terms of its first- and second-order temporal and spectral characteristics for EMC measurements and OTA testing of wireless baseband algorithms in narrowband single-input single-output systems. The investigated characteristics are coherence time, Doppler spectrum, Doppler spread, frequency autocovariance function, coherence bandwidth, rejection rate of Chi-squared goodness-of-fit test for Rician distribution, Rician 𝐾-factor, and channel gain. The investigation considers the effect of different rotational speeds of the VIRC motors, two loading conditions, and the frequency range 670 – 2740 MHz. An analysis of the measurement results shows that the stirring effectiveness degrades at frequencies below 820 MHz in general. For the loaded VIRC in particular, rotational speeds below 28.3 rpm are another degradation contributor. Moreover, the analysis reveals many interesting behavioral trends. This in turn is used to introduce a number of mathematical models closely fitting the behavior of various of the investigated characteristics. Such models are useful, for instance, at shortening similar measurement campaigns of comparable VIRCs.</p>

show abstract

“…Specifically, this is useful when the measurements are performed in a reverberating environment such as an electromagnetic RC or metal enclosures. The Rician factor is ratio of direct power P d and scattered power P s component [21] [22] [23], [24]:…”

Section: F Rician Factormentioning

confidence: 99%

Statistical Characterization of Wireless MIMO Channels in Mode-Stirred Enclosures

Lodro,

Greedy,

Fedeli

et al. 2021

Preprint

View full text Add to dashboard Cite

We present the statistical characterization of a 2x2 Multiple-Input Multiple-Output wireless link operated in a modestirred enclosure, with channel state information available only at the receiver (agnostic transmitter). Our wireless channel measurements are conducted in absence of line of sight and varying the inter-element spacing between the two antenna elements in both the transmit and receive array. The mode-stirred cavity is operated: i) at a low number of stirrer positions to create statistical inhomogeneity; ii) at two different loading conditions, empty and with absorbers, in order to mimic a wide range of realistic equipment level enclosures. Our results show that two parallel channels are obtained within the confined space at both the operating conditions. The statistical characterization of the wireless channel is presented in terms of coherence bandwidth, path loss, delay spread and Rician factor, and wideband channel capacity. It is found that the severe multipath fading supported by a highly reflecting environment creates unbalance between the two Multiple-Input Multiple-Output channels, even in presence of substantial losses. Furthermore, the channel capacity has a multi-modal distribution whose average and variance scale monotonically with the number of absorbers. Results are of interest in IoT devices, including wireless chip-to-chip and device-to-device communications, operating in highly reflective environments.

show abstract

Reverberation chambers for testing wireless devices and systems

Cited by 21 publications

References 42 publications

Test of 5G System in the Reverberation Chamber at mm-wave

Test of 5G System in the Reverberation Chamber at mm-wave

Empirical Characterization and Modeling of a Propagation Channel inside the VIRC

Statistical Characterization of Wireless MIMO Channels in Mode-Stirred Enclosures

Contact Info

Product

Resources

About