Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II

Research Article

Spectrum Access Based on Energy Harvesting with Optimal Power Allocation

  • @INPROCEEDINGS{10.1007/978-3-319-66628-0_52,
        author={Jiaying Wu and Weidang Lu and Hong Peng and Xin Liu},
        title={Spectrum Access Based on Energy Harvesting with Optimal Power Allocation},
        proceedings={Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II},
        proceedings_a={CHINACOM},
        year={2017},
        month={10},
        keywords={Energy harvesting Power allocation Spectrum access},
        doi={10.1007/978-3-319-66628-0_52}
    }
    
  • Jiaying Wu
    Weidang Lu
    Hong Peng
    Xin Liu
    Year: 2017
    Spectrum Access Based on Energy Harvesting with Optimal Power Allocation
    CHINACOM
    Springer
    DOI: 10.1007/978-3-319-66628-0_52
Jiaying Wu1, Weidang Lu1,*, Hong Peng1, Xin Liu2
  • 1: Zhejiang University of Technology
  • 2: Dalian University of Technology
*Contact email: luweid@zjut.edu.cn

Abstract

In this paper, we propose a spectrum access method based on energy harvesting with optimal power allocation. Specifically, in the first phase, the primary user broadcasts its signal. The cognitive user receives the primary signal, and splits the power into two parts, one is to decode information, another is to harvest energy. In the second phase, the cognitive user forwards the primary signal by using the power harvested in the first phase, whlich assists the primary user to achieve the target rate. The cognitive user can access the primary spectrum to transmit its own signal by using its own power as a reward. We study the optimal power allocation to maximize the cognitive achievable rate, meanwhile the target rate of the primary user is achieved. Simulation results indicate that the proposed method can improve the performances of both the primary and cognitive users.