Experimental Results Using a Mimo Test Bed for Wideband, High Spectral Efficiency Tactical Communications

Liberti, J.C.; Koshy, John C.; Hoerning, T.R.; Martin, C.; Dixon, J.L.; Triolo, Anthony; Murray, R.R.; McGiffen, T.

doi:10.1109/milcom.2005.1605864

Cited by 4 publications

(3 citation statements)

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“…Path loss investigations in an urban environment for tactical systems at 225, 450 and 900 MHz are presented in [11]. Furthermore, [12] reports wideband measurements at 400 MHz, and [13] demonstrated the feasibility of wideband, spectrally efficient MIMO peer-to-peer communications at 456, 904, and 2177 MHz. Moreover, double-directional channel measurements at 300 MHz, in a semi-rural and suburban environment, is presented in [14].…”

Section: Introductionmentioning

confidence: 99%

Urban peer-to-peer MIMO channel measurements and analysis at 300 MHz

Eriksson

Linder

Wiklundh

et al. 2008

MILCOM 2008 - 2008 IEEE Military Communications Conference

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Multiple-input multiple-output (MIMO)systems operating at frequencies in the upper VHF and lower UHF region is attractive for peer-to-peer communication applications where robustness is of high importance, e.g., in tactile networks and emergency response systems. When designing and evaluating such systems, knowledge of realistic propagation conditions is required. This paper presents results from an uran MIMO measurement campaign at 300 MHz. Measurements are performed along 25 receiver routes and for three fixed transmitter locations, using antenna arrays mounted on two cars. Channel characteristics and ergodic capacity for the 7X7 MIMO channels are extracted from the measured data. A path-loss model is derived for the measured scenario, and the distributions of the large-scale fading, the Ricean K-factor, the delay spread, and the ergodic capacity are studied in deatail. The correlation distance for the different channel parameters is also examined. Furthermore, the analysis reveals that several of the channel parameters are correlated, and also have a strong correlation with the capacity. MILCOM 2008This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Abstract-Multiple-input multiple-output (MIMO) systems operating at frequencies in the upper VHF and lower UHF region is attractive for peer-to-peer communication applications where robustness is of high importance, e.g., in tactical networks and emergency response systems. When designing and evaluating such systems, knowledge of realistic propagation conditions is required. This paper presents results from an urban MIMO measurement campaign at 300 MHz. Measurements are performed along 25 receiver routes and for three fixed transmitter locations, using antenna arrays mounted on two cars. Channel characteristics and ergodic capacity for the 7×7 MIMO channels are extracted from the measured data. A path-loss model is derived for the measured scenario, and the distributions of the large-scale fading, the Ricean K-factor, the delay spread, and the ergodic capacity are studied in detail. The correlation distance for the different channel parameters is also examined. Furthermore, the analysis reveals that several of the channel parameters are correlated, and also have a strong correlation with the capacity.

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Section: Introductionmentioning

confidence: 99%

Urban peer-to-peer MIMO channel measurements and analysis at 300 MHz

Eriksson

Linder

Wiklundh

et al. 2008

MILCOM 2008 - 2008 IEEE Military Communications Conference

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“…The fixed wireless outdoor International Journal of Antennas and Propagation MIMO channel has also been investigated in urban environments, see, for example, [21][22][23][24][25]. Further, experiments in which both ends of the wireless link are mobile have been performed to measure vehicle-to-vehicle MIMO channels, as reported in [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Impact of Vehicular Array Position on Urban MIMO Channel Characteristics

Squires¹,

Willink²

2011

International Journal of Antennas and Propagation

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MIMO channel measurements have been performed in urban environments with antenna arrays positioned on the roof and sides of the measurement vehicle. Analysis of the data shows that the array's position on the vehicle, along with the location and orientation of the vehicle with respect to the transmitter, can have a considerable impact on the channel characteristics observed. Array elements on the vehicle's roof receive the same multipath components, and, therefore, have identically distributed channel responses. However, the characteristics of the multipath components observed at each side of the vehicle can differ significantly. Specifically, shadowing from the vehicle combined with the directionality of the side-mounted array elements affects the angular distribution and powers of the received multipath components, affecting the achievable diversity and channel capacity. This can have significant impact on system performance and should be considered when designing and analyzing vehicular-based signalling techniques.

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“…Single-input single-output (SISO) measurements are available: wideband measurements of the SISO peer-to-peer radio channel for low antenna heights have been reported in, e.g., [6], whereas measurements for narrowband peer-to-peer scenarios have been performed at 400 MHz for the design and evaluation of the TETRA system [7], [8], and at 225, 450, and 900 MHz for mobile military tactical communication in urban environments [9]. Wideband, high spectral efficient MIMO peer-to-peer communications at 456, 904 and 2177 MHz have been demonstrated in [10].…”

Section: Introductionmentioning

confidence: 99%

WLC11-2: Propagation Channel Characteristics for Peer-to-Peer Multiple Antenna Systems at 300 MHz

2006

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This paper presents results from the first doubledirectional measurements of the Multiple-Input Multiple-Output (MIMO) peer-to-peer radio channel in the 300 MHz frequency range. The measurements were performed with vertically polarized circular antenna arrays mounted on cars driving along a route in a semi rural and sub-urban environment. We evaluate the measurements with a high resolution algorithm, thus obtaining a wideband, double-directional characterization of the propagation channel. The delay-and directional spread, as well as the small-scale fading statistics are analyzed along the measurement routes and major scatterers are identified. The measurements, performed with low antennas heights, show high angular spreads, caused by reflections from trees and buildings and by diffractions over terrain irregularities. We further observe multiple clusters in both the delay and angular domains. The large spreads in these domains indicate a high degree of available diversity, and rich multipath in the considered environment.

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Experimental Results Using a Mimo Test Bed for Wideband, High Spectral Efficiency Tactical Communications

Cited by 4 publications

References 5 publications

Urban peer-to-peer MIMO channel measurements and analysis at 300 MHz

Urban peer-to-peer MIMO channel measurements and analysis at 300 MHz

Impact of Vehicular Array Position on Urban MIMO Channel Characteristics

WLC11-2: Propagation Channel Characteristics for Peer-to-Peer Multiple Antenna Systems at 300 MHz

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