Wireless Energy Harvesting on AF Relaying System over Outdated Channel Conditions

Abstract

In this paper, the throughput analysis of amplify- and-forward cooperative communication with single wireless- energy-harvesting relay terminal in the presence of outdated channel conditions is evaluated. We propose a new channel delay model with transmission time structure that follows the criterion of slow fading channel, in order to realize the small delay according to Jakes' autocorrelation model and employ it to both source-to-relay and relay-to-destination links. To determine the throughput, we develop tractable analytical expressions where the harvested energy at the relay terminal is based on time- switching protocol by considering both delay-limited and delay- tolerant transmission modes. The numerical results show that the performance of achievable throughput is highly related to the motions of the terminals and delay period in the block transmission time.