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Sanchez-Heredia J.D.,Technical University of Cartagena | Valenzuela-Valdes J.F.,EMITE Ingenieria SLNE | Martinez-Gonzalez A.M.,Technical University of Cartagena | Sanchez-Hernandez D.A.,Technical University of Cartagena
IEEE Transactions on Antennas and Propagation | Year: 2011

Some recent publications have extended the emulating capabilities of mode-stirred reverberation chambers, which are now able to emulate Ricean-fading and non-isotropic environments. Either the need to physically modify existing chambers or multiple sets of measurements is required for these enhancements. In this paper a novel post-processing hybrid tool is presented for the transformation of a Rayleigh-fading emulated environment into a Rician one. The model is tested and compared to outdoor measurements and simulations through the K-factor, correlation, diversity gain and MIMO capacity. Results show an excellent matching performance with no hardware modifications of mode-stirred chambers with just one set of measurements. The method is patent protected by EMITE Ing. © 2010 IEEE.

Mora-Andreu M.,EMITE Ingenieria SLNE | Sanchez-Hernandez D.A.,Technical University of Cartagena
8th European Conference on Antennas and Propagation, EuCAP 2014 | Year: 2014

An Inter-Lab/Inter-Technique OTA Performance Comparison Testing by CTIA MOSG and supported by 3GPP RAN4 has recently taken place. In this contribution, test results obtained by different Reverberation Chamber vendors with the NIST, Isotropic UMI (IS UMi) and Isotropic UMa (IS UMa) channel models are presented. Standard deviations between different candidate methodologies show that reverberation chambers (RC) and more repeatable and accurate across vendors than their anechoic chamber (AC) counterparts. © 2014 IEEE.

Marin-Soler A.,EMITE Ingenieria SLNE | Ypia-Garcia G.,EMITE Ingenieria SLNE | Belda-Sanchiz A.,EMITE Ingenieria SLNE | Martinez-Gonzalez A.M.,EMITE Ingenieria SLNE
International Journal of Antennas and Propagation | Year: 2012

During the March 2011 meeting of the CTIA MIMO OTA Subgroup (MOSG), the members agreed that the subgroup should first determine what aspects of a MIMO-capable device require evaluation; then the group should determine how to go about making these measurements. In subsequent meetings of MOSG, new yet-unnamed figures of merit were asked for in order to provide a solution to the carriers' requirements for LTE MIMO OTA evaluation. Furthermore, the December 2011 3GPP RAN4 status report on LTE MIMO OTA listed the evaluation of the use of statistical performance analysis in order to minimize test time and help ensure accurate performance assessment as an open issue. This contribution addresses these petitions by providing four new figures of merit, which could serve the purpose of evaluating the operators' top priorities for MIMO OTA compliance testing. The new figures of merit are MIMO Throughput Effectiveness (MTE), MIMO Device Throughput Effectiveness (MDTE), MIMO Throughput Gain (MTG), and MIMO Device Throughput Gain (MDTG). In this paper, MTE is evaluated using the recently available LTE MIMO OTA RR data from 3GPP. Copyright © 2012 Adoracin Marn-Soler et al.

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