Abstract-In this paper, a wireless cooperative network is considered, in which multiple source-destination pairs communicate with each other via an energy harvesting relay. The focus of this paper is on the relay's strategies to distribute the harvested energy among the multiple users and their impact on the system performance. Specifically, a non-cooperative strategy is to use the energy harvested from the i-th source as the relay transmission power to the i-th destination, to which asymptotic results show that its outage performance decays as log SNR SNR . A faster decaying rate, 1 SNR , can be achieved by the two centralized strategies proposed this the paper, where the water filling based one can achieve optimal performance with respect to several criteria, with a price of high complexity. An auction based power allocation scheme is also proposed to achieve a better tradeoff between the system performance and complexity. Simulation results are provided to confirm the accuracy of the developed analytical results and facilitate a better performance comparison.
Ding et al. REF considered a cooperative EH relay network consisting of multiple source-destination pairs with the assistance of an EH relay and an auction-based power allocation scheme was proposed to address the harvested energy distribution among the multiple source nodes.
Power Allocation Strategies in Energy Harvesting Wireless Cooperative Networks
ArXiv
ArXiv
Mathematics Computer Science