Optimal Power Splitting of Cognitive Radio Networks with SWIPT-Enabled Relay

  • Yuanrong LinEmail author
  • Weidang Lu
  • Hong Peng
  • Jingyu Hua
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 251)


Cognitive radio (CR), as an intelligent spectrum sharing technology, can improve utilization of spectrum by sharing the licensed spectrum bands with secondary users (SUs) as long as do not have harmful effect on primary users (PUs). Simultaneous wireless information and power transfer (SWIPT) combines wireless information transmission (WIT) technology and wireless power transfer (WPT) technology, which harvesting energy from ambient RF signals. In this paper, we consider amplify-and-forward (AF) cognitive radio networks (CRNs) with SWIPT-enabled secondary relay node. We aim to maximize the throughput of secondary network in considering the interference caused by the transmitted signal of secondary relay node to PUs, and derived the closed-form expression of the optimal power splitting ratio. Simulation results demonstrate the performance of the optimal power splitting ratio.


Simultaneous wireless information and power transfer Cognitive networks Amplify-and-forward Throughput 


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018

Authors and Affiliations

  • Yuanrong Lin
    • 1
    Email author
  • Weidang Lu
    • 1
  • Hong Peng
    • 1
  • Jingyu Hua
    • 1
  1. 1.College of Information EngineeringZhejiang University of TechnologyHangzhouChina

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