Admission control and power allocation for energy harvesting systems with QoS provisioning

In this paper, we address the problem of joint admission control and power allocation for energy harvesting (EH)-based communication systems. We consider that the harvested energy from the environment is uncertain and insufficient to satisfy the quality-of-service (QoS) requirement of all the communication devices in the system. Joint admission control and power allocation with QoS provisioning for EH systems under causal information of harvested energy and incomplete CSI is very difficult to solve. We develop an efficient “online” resource allocation policy based on dynamic programming to solve this problem considering the practical constraints of EH systems. We compare our proposed scheme with an “offline” scheme that considers the availability of non-causal information and with a practical “naive” scheme based on instantaneous information and demonstrate the effectiveness of our proposed algorithm.