MIMO capacity of antenna arrays evaluated using radio channel measurements, reverberation chamber and radiation patterns

García-García, L.; Lindmark, B.; Jalden, Niklas; Orlenius, Charlie

doi:10.1049/iet-map:20060236

Cited by 17 publications

(19 citation statements)

References 10 publications

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“…Therefore h in (11) can be well approximated as a zero mean Gaussian vector [16]. Note that the radiation efficiency of the wall antenna is also calibrated out by (11). Since the wall antennas are separated sufficiently away from each other and that they are orthogonally polarized, their correlations are negligible.…”

Section: Measurementsmentioning

confidence: 99%

“…As a result, the diversity gain and capacity become two popular parameters for characterizations of multi-element antennas in multipath environments. Lots of works have been carried out for measuring diversity gains and/or capacities of multi-antenna systems [2][3][4][5][6][7][8][9][10][11]. Most of the previous studies assumed sufficient channel samples so that the sample estimation errors of eigenvalues of channel covariance matrices were negligible.…”

Section: Introductionmentioning

confidence: 99%

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Measurements and Evaluations of Multi-Element Antennas Based on Limited Channel Samples in a Reverberation Chamber

Chen¹

2012

PIER

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Abstract-In this paper, evaluations of diversity gains and capacities of multi-element antenna based on limited channel samples in a reverberation chamber (RC) are studied. It is shown that, for a large antenna array, the classical sample estimation based on finite channel samples tends to underestimate its diversity gain and capacity. An improved (yet slightly more complicated) eigenvalue estimation method is applied in both diversity gain and capacity calculations, which effectively alleviates the estimation bias. The findings of the present paper are applicable for measurements where the maximum independent channel samples per antenna element are limited. Apart from simulations, we also evaluate the performances of the classical and improved eigenvalue estimators based on measurements in a RC. Based on the results of this paper, the performance of the RC measurement (with limited samples) for multi-element antennas can be readily enhanced.

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Section: Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurements and Evaluations of Multi-Element Antennas Based on Limited Channel Samples in a Reverberation Chamber

Chen¹

2012

PIER

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“…The use of reverberation chambers for MIMO system testing has been discussed in prior publications, for example, [1][2][3][4][5]. Most publications predict the maximum capacity of MIMO systems based on knowledge of the antenna radiation pattern (measured, modeled, or simulated), coupled with the channel response.…”

Section: Introductionmentioning

confidence: 99%

“…Most publications predict the maximum capacity of MIMO systems based on knowledge of the antenna radiation pattern (measured, modeled, or simulated), coupled with the channel response. In some cases, the channel response is measured [1][2][3], and in other cases it is modeled [1,2,4]. Using this "two stage" method, data throughput is inferred, rather than directly measured.…”

Section: Introductionmentioning

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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“…While 3D pattern measurements are required for full analysis, Over The Air testing (OTA) by subjecting the antenna under test (AUT) to simulate multipath fading using a number of radiating sources surrounding the AUT [6], [7] or inside a reverberation chamber [8], [9] have also been used to yield comparative performance figures for antennas.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effect of antenna tilt and rotation on antenna performance in an indoor environment

Hilton

Mellios

Kong

et al. 2011

2011 Loughborough Antennas &Amp; Propagation Conference

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Abstract-In this paper the relative performances of antenna elements are assessed by combining the measured full (3D) farfield radiation patterns of each with measured angle of arrival data for a laboratory/office space. Three element types (Cavitybacked Slot, Printed Inverted-F and Dielectric Resonator) at two positions on a small mobile terminal are considered, and the terminal is tilted and rotated in order to determine the variation in performance that is obtained for three transmitter locations. Results are presented as cumulative distribution functions of directivity relative to a benchmark Hertzian dipole for operation at 5.2GHz. A variation in signal strength of greater than 30dB was observed due to both the directivity of the elements and their polarisation alignment with the vertical transmitting source.

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MIMO capacity of antenna arrays evaluated using radio channel measurements, reverberation chamber and radiation patterns

Cited by 17 publications

References 10 publications

Measurements and Evaluations of Multi-Element Antennas Based on Limited Channel Samples in a Reverberation Chamber

Measurements and Evaluations of Multi-Element Antennas Based on Limited Channel Samples in a Reverberation Chamber

Simulating MIMO techniques in a reverberation chamber

Evaluating the effect of antenna tilt and rotation on antenna performance in an indoor environment

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