Resource Allocation for Wireless Communication Networks with RF Energy Harvesting

Abstract

The successful development of wireless communication networks and technologies has triggered an exponential growth in the number of wireless communication devices worldwide. In the near future, devices embedded with multifunctional sensors and communication chip sets will be able to collect and exchange information via the Internet. With Time Switching (TS) receivers, each transmission block is divided into two orthogonal time slots, one for transferring wireless power and the other one for transmitting information. A power splitting (PS) receiver splits the signal received at the antenna into two streams at different power levels using a PS unit. In practice, a power station is expected to be a simple device with limited signal processing capability. The problem formulations took into account the imperfectness of the channel state information (CSI) and the non-linearity of the energy harvesting (EH) circuits in order to ensure robust resource allocation.