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- W3024963994 abstract "This paper proposes a framework of users association and power allocation in the two-tier heterogeneous networks with nonorthogonal multiple access (NOMA). Taking account of practical wireless communication environment, the channel uncertainties are considered and described in the form of probability constraint. In order to maximize the total energy efficiency of the system and reduce the intra-cell and inter-cell interference, the joint optimization problem is formulated with the uncertain channel gain. The probability constraint is transformed to the deterministic one based on the integral transformation. With the aid of relaxation variable and successive convex approximation method, the original integer non-convex optimization problem is divided into two solvable convex subproblems. The user association algorithm and power control algorithm are presented to determine the optimal resource allocations. The simulation results show that the proposed algorithm is effective and robust to the dynamic communication environment." @default.
- W3024963994 created "2020-05-21" @default.
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- W3024963994 date "2020-07-01" @default.
- W3024963994 modified "2023-10-16" @default.
- W3024963994 title "Robust resource allocation in two-tier NOMA heterogeneous networks toward 5G" @default.
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- W3024963994 doi "https://doi.org/10.1016/j.comnet.2020.107299" @default.
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