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Deploying dense small cell networks overlaying to the conventional macro cell networks is widely regarded as a key step towards network architecture revolution for improved coverage and user rate. Small cells have different kinds, and a target coverage can be achieved through deploying different kinds of small cells. Previous works mainly focus their attention on the optimization of spectrum and energy...
In the future Ultra Dense Network (UDN), deploying new small cells within macro cells is a solution to improve the User Data Rate (UDR). How and where to deploy the small cells are the questions network operator is facing. The paper presents strategies based on stochastic geometry and user behavior analysis to solve the problems separately. A smartphone dataset that reflects real-time network conditions...
In the fifth generation (5G) mobile communication system, the experienced user data rate is expected to achieve at least 0.1Gbps. And the connection density may be one million connections per square kilometers. To satisfy this requirement, deploying dense small cell networks as an overlay to conventional macro cell is regarded as an effective method. In this paper, we analyze the deployment of dense...
In this paper an interference alignment (IA) based dynamic spectrum sharing and user scheduling scheme for cognitive radio (CR) multi-input multi-output (MIMO) uplink system with multiple secondary users is proposed. The difference of spatial transmission performance originating from various channel matrices is exploited to implement appropriate user scheduling. Then by IA processing, cognitive transmission...
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