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Channel state information (CSI) is usually necessary for downlink precoding, power allocation, etc. in multiple-input multiple-output (MIMO) systems. When the base stations (BS) are equipped with massive elements, the training overhead required by conventional CSI estimation methods becomes overwhelming, leading to unacceptable loss of spectrum efficiency. In this paper, we investigate pilot design...
In this paper, we propose a novel formulation for the efficient data gathering problem in Wireless Sensor Networks (WSNs) based on Matrix Completion technique. The objective here is to optimize the usage of WSN resources during the data gathering process by taking into account an a priori knowledge about the data to be gathered. More precisely, we model the prior knowledge about the target data via...
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