Throughput Maximization in Wireless Powered Communication Networks

One promising solution for energy-constrained wireless devices is wireless-powered communication networks (WPCNs), where mobile users harvest energy from the dedicated transmitters, which power the information transmission and do not need to rely on limited-life batteries. Nevertheless, the major issue in WPCNs lies in how to achieve high throughput, and yet energy constraint-compliant devices need to be considered. Summary: This paper surveys throughput maximization in WPCNs. One way to enhance the throughput of WPCNs is to perform resource allocation by which available energy and communication resources are jointly allocated among devices. The value of harvesting energy compared to transmitting data will be the same through different techniques like power splitting and time sharing. The third major problem of WPCNs for harvesting maximum throughput is energy transmission, which uses the energy sources through their power levels to ensure optimal scheduling order to supply power. Other advanced techniques like dynamic power control and channel estimation are implemented to optimize the overall system throughput and obtain higher energy efficiency.