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We propose a new subchannel assignment algorithm for the problem of energy-efficient allocation of subchannels and powers to users for a single-cell OFDMA downlink transmission. It is well known that the joint allocation of subchannels and power for maximizing the energy efficiency of transmission is time-consuming due to the non-convexity of the objective function. Recently, the problem of energy-efficient...
In this paper, resource allocation for OFDMA system with proportional rate constraints is studied. The objective is to optimize subcarriers and power allocation in order to maximize sum capacity subject to the constraints of total power and proportionality among users' capacity. Optimal solution to the constrained fairness maximization problem is extremely computationally expensive. Previous works...
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