Distributed Power Control for Multi-Hop Energy Harvesting Links With Retransmission - 2018


During this Project, we think about an energy harvesting (EH) node that periodically takes a measurement and conveys it to a destination over multiple EH relays operating within the decode-and-forward fashion, using the automated repeat request protocol. Packets that are not delivered to the destination before the following measurement is taken are dropped. We tend to get to design an online retransmission-index primarily based power control policy (RIP) for each node which minimizes the packet drop probability (PDP). To this finish, we 1st derive an expression for the PDP in terms of the RIPs at the nodes. Next, when the energy price for decoding a packet is negligible, we obtain closed kind expressions for the optimal RIPs. We tend to conjointly extend the results to the case where the peak transmit power is constrained. When the energy price of decoding is non-negligible, we tend to present a geometric programming primarily based iterative algorithm to get close to-optimal RIPs. In both the scenarios, in order to get insight into the impact of channel coherence time, we tend to style the RIPs for each slow and fast fading channels. Through Monte Carlo simulations, we tend to show that the proposed policies considerably outperform state-of-the-art solutions.

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