Gain without Pain: Recycling Reflected Energy from Wireless Powered RIS-aided Communications

  title={Gain without Pain: Recycling Reflected Energy from Wireless Powered RIS-aided Communications},
  author={Hao Xie and Bowen Gu and Dong Li and Zhi Lin and Yongjun Xu},
—In this paper, we investigate and analyze energy recycling for a reconfigurable intelligent surface (RIS)-aided wireless-powered communication network. As opposed to the existing works where the energy harvested by Internet of things (IoT) devices only come from the power station, IoT devices are also allowed to recycle energy from other IoT devices. In particular, we propose group switching- and user switching- based protocols with time-division multiple access to evaluate the impact of energy… 



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How Many Reflecting Elements Are Needed for Energy- and Spectral-Efficient Intelligent Reflecting Surface-Assisted Communication

  • Dong Li
  • Computer Science
    IEEE Transactions on Communications
  • 2022
The relationship between the derived number of reflecting elements is established for both schemes, and the upper bounds on both the EE and the SE thresholds and the placement of the IRS to achieve only one reflecting element are obtained.

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