Joint proportional fairness admission control and superposition coding for OFDMA networks

In this paper, we aim to design an OFDMA frame-based resource allocation scheme allowing the power consumption minimization, the throughput enhancement and the queue´s stability. We have proposed a novel proportional fairness admission control strategy in order to guarantee the desired QoS for each user. To increase the number of admitted users, we investigate a joint superposition coding and admission control process permitting to further exploit the multiuser diversity. Furthermore, we have suggested a power and bandwidth allocation scheme permitting to minimize power consumption while ensuring buffer´s stability and satisfying the QoS requirements of users in a heavy load context. Numerical studies are conducted to evaluate the performance of the proposed algorithms in terms of served user and power consumption.