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Optimization in Cognitive Radio Networks with SWIPT-Based DF Relay

  • Jie Zhang
  • Weidang Lu
  • Hong Peng
  • Zhijiang Xu
  • Xin Liu
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 251)

Abstract

Energy-constrained relay networks are normally powered by a fixed energy, which limits the runtime of networks. Energy harvesting (EH) with simultaneous wireless information and power transfer (SWIPT) is hopeful to increase the life of energy-limited relay networks. We investigate the optimization problem about power splitting ratio for SWIPT-based decode-and-forward (DF) relay in cognitive radio networks (CRNs). Secondary relaying node (SRN) harvests energy from secondary source node (SSN) then use the energy to assist forwarding SSN information to the secondary destination node (SDN). We maximize throughput of secondary users (SUs) if the interference caused by SU to the primary users (PUs) is under the threshold. Some opinions are provided through theory analysis and simulation results.

Keywords

Energy harvesting SWIPT Decode-and-forward Power splitting Cognitive radio networks 

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Copyright information

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

Authors and Affiliations

  • Jie Zhang
    • 1
  • Weidang Lu
    • 1
  • Hong Peng
    • 1
  • Zhijiang Xu
    • 1
  • Xin Liu
    • 2
  1. 1.College of Information EngineeringZhejiang University of TechnologyHangzhouChina
  2. 2.School of Information and Communication EngineeringDalian University of TechnologyDalianChina

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