Packet drop probability analysis of ARQ and HARQ-CC with energy harvesting transmitters and receivers

In this paper, we analyze the packet drop probability (PDP) of dual energy harvesting (EH) links, i.e., links whose both transmitter and receiver are EH nodes. The link employs either an automatic repeat request (ARQ) protocol or a hybrid ARQ protocol with chase combining (HARQ-CC) at the receiver. We present the performance analysis for both slow and fast fading channels. We model the system evolution as a discrete-time Markov chain (DTMC) and obtain approximate closed-form expressions for the PDP. Simulations show that the presented approximate expressions closely match the actual PDP. The results capture the relative impact of the energy harvesting rates at the transmitter and receiver, and the effect of the underlying protocol and power policy, on the PDP.