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This paper investigates the power control problem for the downlink of a multi-cell non-orthogonal multiple access system. The problem, called P-OPT, aims to minimize the total transmit power of all the base stations subject to the data rate requirements of the users. The feasibility and optimality properties of P-OPT are characterized through a related optimization problem, called Q-OPT, which is...
This paper investigates the power control problem for the downlink of a non-orthogonal multiple access (NOMA) system with two cells. The problem, called p-Opt, aims to minimizes the total transmit power of the base stations subject to the data rate requirements of the users. The feasibility and optimality properties of p-Opt is first characterized. It is proved that the feasible power region of p-Opt...
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