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In this paper, we consider the downlink training in a massive MIMO system, where the base station (BS) is equipped with a large-scale planar array and the user equipment (UE) has a single antenna. We propose a sparsity-aware channel estimation technique to estimate the 2D angular information of the dominant channel paths, which can be subsequently used for downlink beamforming in the data transmission...
In this paper we present a new blind receiver for multiuser signal separation and equalization. The proposed receiver is designed for wireless communication systems employing multiple antennas and temporal oversampling at the receiver and relies on parallel factor (PARAFAC) analysis. Based on a parametric multipath channel model with frequency-selective fading, we perform a PARAFAC decomposition of...
In this work, we propose the use a multivariate analysis tool, called principal components analysis (PCA), to address the problem of Students' Evaluation of Teaching Effectiveness (SETE). We conducted a research with Engineering Students in an undergraduate course. The values obtained after collecting research data were transformed from a 3D array to a 2D array performing an average of students' responses...
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