Energy Efficient Resource Allocation for Wireless Power Transfer Enabled Massive MIMO Systems with Proportional Fairness

Abstract

In this paper, an energy efficient resource allocation algorithm for massive multiple-input-multiple-output (MIMO) systems powered by wireless power transfer (WPT) with proportional fairness is investigated. In the system, multiple sensor nodes (SNs) harvest energy from the power beacon (PB) by WPT, and then the SNs communicate with the base station (BS) by exploiting the harvested energy. A proportional fair energy efficient resource allocation algorithm that combines time and power allocation is proposed to maximize the energy efficiency (EE). Compared with the minimum EE maximization algorithm and the total user’s energy efficiency maximization algorithm, simulation results verify the proposed algorithm can obtain a good tradeoff between the total EE of the system and minimum EE of the users.