| Radio frequency (RF) signals have been utilized as a vehicle for information transmission or wireless communication for decades. Meanwhile, the energy carried by RF signals can also be used to transfer power wirelessly. Wireless information and power transfer, with the aim to provide energy supply and data access to wireless users at the same time, has recently drawn significant interests. This thesis pursues a unified study on wireless information and power transfer, by investigating two main models for applications, namely, simultaneous wireless information and power transfer (SWIPT) using the same RF signals, as well as wireless powered communications (WPC) via RF energy harvesting (EH). (Abstract shortened by UMI.). |