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The network selection problem in a heterogeneous network environment is studied in the paper. A 3-Param network selection algorithm for CR terminals is proposed. Both the factors that are sensed by the CR terminals and the factors that cannot be gained beforehand are taken into account in the algorithm. Through the evaluation of the primary networks integrating these factors, the algorithm will make...
Massive multiple-input multiple-output (M-MIMO) can significantly enhance the spectrum efficiency of cellular networks by deploying hundreds of active elements at the base stations and is envisaged to become the key technology in 5th generation (5G) cellular networks. However, the large number of antennas required brings about tremendous challenges for practical implementation, especially for separation...
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