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Optimal Power Allocation for a Relaying-Based Cognitive Radio Network in a Smart Grid

Author

Listed:
  • Kai Ma

    (School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Xuemei Liu

    (School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Jie Yang

    (School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China
    Key Laboratory of System Control and Information Processing, Ministry of Education, Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China)

  • Zhixin Liu

    (School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

  • Yazhou Yuan

    (School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China)

Abstract

This paper obtains optimal power allocation to the data aggregator units (DAUs) and relays for cognitive wireless networks in a smart grid (SG). Firstly, the mutual interference between the primary user and the DAU are considered, and the expressions of the DAU transmission signal are derived based on the sensing information. Secondly, we use the particle swarm optimization (PSO) algorithm to search for the optimal power allocation to minimize the costs to the utility company. Finally, the impact of the sensing information on the network performance is studied. Then two special cases (namely, that only one relay is selected, and that the channel is not occupied by the primary user) are discussed. Simulation results demonstrate that the optimal power allocation and the sensing information of the relays can reduce the costs to the utility company for cognitive wireless networks in a smart grid.

Suggested Citation

  • Kai Ma & Xuemei Liu & Jie Yang & Zhixin Liu & Yazhou Yuan, 2017. "Optimal Power Allocation for a Relaying-Based Cognitive Radio Network in a Smart Grid," Energies, MDPI, vol. 10(7), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:909-:d:103495
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    References listed on IDEAS

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    1. Xin Liu & Zhenyu Na & Min Jia & Xuemai Gu & Xiaotong Li, 2016. "Multislot Simultaneous Spectrum Sensing and Energy Harvesting in Cognitive Radio," Energies, MDPI, vol. 9(7), pages 1-13, July.
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    Cited by:

    1. Jen-Hao Teng & Chia-Wei Chao & Bin-Han Liu & Wei-Hao Huang & Jih-Ching Chiu, 2018. "Communication Performance Assessment for Advanced Metering Infrastructure," Energies, MDPI, vol. 12(1), pages 1-17, December.
    2. Kai Ma & Yege Bai & Jie Yang & Yangqing Yu & Qiuxia Yang, 2017. "Demand-Side Energy Management Based on Nonconvex Optimization in Smart Grid," Energies, MDPI, vol. 10(10), pages 1-17, October.

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