Static and Dynamic Propagation-Channel Impairments in Reverberation Chambers

Remley, Kate A.; Floris, Sander J.; Shah, H. A.; Holloway, C.L.

doi:10.1109/temc.2010.2100823

Cited by 29 publications

(23 citation statements)

References 23 publications

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“…Moreover, RC field characteristics are able to create real environment propagation conditions, very useful in Wi-Fi communication system testing [14][15][16][17], and in the antenna testing [18]. On the other hand, also the studies of human exposure to electromagnetic field take benefit from RC in order to reproduce real exposure conditions [19,20].…”

Section: Introductionmentioning

confidence: 99%

Absorbing Cross Section in Reverberation Chamber: Experimental and Numerical Results

Gradoni¹,

Micheli²,

Moglie³

et al. 2012

PIER B

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Abstract-Reverberation chamber (RC) test facility allows to determine the absorbing cross section (ACS) of lossy materials under a random field excitation. Measurements are based on the quality factor variation produced by the sample under test presence with respect to the empty chamber condition. Simulations are based on the representation of the RC electromagnetic field by means of a random plane wave superposition. A finite-difference time-domain code is used to compute the material absorbed power and to recover a numerical ACS. The method sensibility is stressed by application to small size samples. Comparison between numerical and experimental data reveals a satisfactory agreement. Results for different materials are presented in the paper: soft foam absorbers, carbon foam sheets, and carbon/carbon sheets.

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Section: Introductionmentioning

confidence: 99%

Absorbing Cross Section in Reverberation Chamber: Experimental and Numerical Results

Gradoni¹,

Micheli²,

Moglie³

et al. 2012

PIER B

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“…For example, repeatability of our measurement system will contribute to uncertainty in the calculated BER. As discussed in [13], the repeatability of the BER measurements for the VSG/VSA system described here depends on the data rate, modulation format, and received power level. In our chamber, this source of uncertainty in BER is generally less than 0.001 % for higher received power levels such as those considered here.…”

Section: Resultsmentioning

confidence: 97%

“…In fact, the reduction in BER is the most pronounced when any advanced technique is used, compared to the additional improvement when two or more techniques are used. The large increase in the bit error rate for lower values of loading can be explained by the limited coherence bandwidth of the reverberation chamber under these conditions [13].…”

Section: Resultsmentioning

confidence: 99%

Simulating MIMO techniques in a reverberation chamber

Remley¹,

Fielitz²,

Shah³

et al. 2011

2011 IEEE International Symposium on Electromagnetic Compatibility

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Abstract-We present a general method for over-the-air test of antenna setups and/or post-processing algorithms used in advanced transmission schemes. The method utilizes a reverberation chamber to simulate various levels of multipath in the propagation environment. Multipath is essential for correctly estimating the performance of multiple-antenna systems. Our test set-up enables measurement of data throughput with standard laboratory instruments. With this test set-up, antenna setups can be studied while isolated from any specific system hardware implementation.Index Terms-antenna array, antenna diversity, beam forming, bit error rate, multipath, multiple-input, multiple-output wireless system, reverberation chamber, wireless system.

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“…Determining the number of independent samples in the final subset represents a key issue. The number of independent samples of the original data set is calculated by the techniques in [35], [36], wherein the oversampling ratio is defined as (12) where is the number of measured samples in the initial set of data. When the algorithms are performing the sample selection process, independent samples are discarded every time a consecutive sequence of measured samples longer than or equal to the over sampling ratio is discarded.…”

Section: Accuracy Of Sample-selected Distributionsmentioning

confidence: 99%

“…Thus, the electric or magnetic field inside the single-cavity follows a Rayleigh probability density function (PDF) in amplitude and uniform distribution of phase, which resembles the multipath fading in urban scenarios of wireless communications systems. This initial design has been densely studied in the literature [7]- [12]. But in MSRCs, a term that was coined in 1995 [13], the fields do not necessarily have to be constrained to a single-cavity or even be provided in a reverberating mode to the researcher.…”

mentioning

confidence: 99%

Sample Selection Algorithms for Enhanced MIMO Antenna Measurements Using Mode-Stirred Reverberation Chambers

Marin-Soler

Grudén

Sánchez‐Heredia

et al. 2012

IEEE Trans. Antennas Propagat.

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Abstract-Mode-stirred reverberation chambers (MSRCs) are a useful tool for measuring several wireless-related MIMO antenna parameters. In a conventional single-cavity MSRC, the emulated fading environment is isotropic and the amplitude of the signal is Rayleigh distributed. Previous contributions have enhanced the emulation capabilities of MSRCs so as to include the ability to emulate Rician-and non-isotropic fading environments. In this contribution, arbitrary amplitude probability density functions (PDF) emulation using a MSRC is presented by selecting parts of the sample set that forms different statistical ensembles. Several algorithms are presented and compared in terms of computation time and power accuracy using simulated as well as measured data from different MSRCs to obtain Rician, on-body and amplitude PDFs of standardized models. The technique is patent-protected by EMITE.

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Static and Dynamic Propagation-Channel Impairments in Reverberation Chambers

Cited by 29 publications

References 23 publications

Absorbing Cross Section in Reverberation Chamber: Experimental and Numerical Results

Absorbing Cross Section in Reverberation Chamber: Experimental and Numerical Results

Simulating MIMO techniques in a reverberation chamber

Sample Selection Algorithms for Enhanced MIMO Antenna Measurements Using Mode-Stirred Reverberation Chambers

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