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The following contribution presents a profile reconstruction method using amplitude-only information. The idea is to combine a phase retrieval algorithm together with an equivalent currents-based profile reconstruction method. The proposed method is initially conceived to work with planar NF acquisition setups, presenting an application example based on simulated data.
In this paper, a 4 × 4 indoor multiple-input multiple-output ultra-wideband (MIMO-UWB) measurement campaign in the 2-5 GHz bandwidth is presented. The aim of this work is analyze the effect of radio-wave polarization as well as the effect of frequency dependence on MIMO-UWB systems working in laboratories environment. To achieve this, many parameters such as the mean path loss, the RMS delay spread,...
In this paper, a 2×2 time-domain Multiple-Input Multiple-Output (MIMO) channel sounder is presented. The developed system is based on Code Division Multiplexed (CDM) signals. It is formed by a base band pulse generator, a wideband I/Q modulator and a digital store oscilloscope. This system is compared to a frequency domain channel sounder by means of measurements in order to assure the accuracy of...
In this paper the complete state of the art of UWB is presented, ranging from the theory of the wireless channel, measurements, channel modeling the use of UWB in multiple antenna systems. This work presents preliminary results of a measurement campaign accomplished in the Technical University of Cartagena. Measurements were performed from 2 GHz to 5 GHz using a Vector Network Analyzer (VNA), and...
An extension of the sources reconstruction method (SRM) for handling with arbitrary-geometry field acquisition domains is presented. The amount of information that is needed to retrieve the original sources (field-sampling requirements, number of field components to be considered) is discussed as well as the influence of the noise in the measurements and the resolution limitations. The discussion...
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