Backscatter-Assisted Relaying in Wireless Powered Communications Network

  • Yuan ZhengEmail author
  • Suzhi Bi
  • Xiaohui Lin
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 251)


This paper studies a novel cooperation method in a two-user wireless powered communication network (WPCN), in which one hybrid access point (HAP) broadcasts wireless energy to two distributed wireless devices (WDs), while the WDs use the harvested energy to transmit their independent information to the HAP. To tackle the user unfairness problem caused by the near-far effect in WPCN, we allow the WD with the stronger WD-to-HAP channel to use part of its harvested energy to help relay the other weaker user’s information to the HAP. In particular, we exploit the use of backscatter communication during the wireless energy transfer phase such that the helping relay user can harvest energy and receive the information from the weaker user simultaneously. We derive the maximum common throughput performance by jointly optimizing the time duration and power allocations on wireless energy and information transmissions. Our simulation results demonstrate that the backscatter-assisted cooperation scheme can effectively improve the throughput fairness performance in WPCNs.



The work of S. Bi was supported in part by the National Natural Science Foundation of China under Project 61501303, the Foundation of Shenzhen City under Project JCYJ20160307153818306 and JCYJ20170818101824392, the Science and Technology Innovation Commission of Shenzhen under Project 827/000212, and the Department of Education of Guangdong Province under Project 2017KTSCX163. The work of X. H. Lin was supported by research Grant from Guangdong Natural Science Foundation under the Project number 2015A030313552. X. H. Lin is the corresponding author of this paper.


  1. 1.
    Bi, S., Ho, C.K., Zhang, R.: Wireless powered communication: opportunities and challenges. IEEE Commun. Mag. 53(4), 117–125 (2015)CrossRefGoogle Scholar
  2. 2.
    Bi, S., Zeng, Y., Zhang, R.: Wireless powered communication networks: an overview. IEEE Wirel. Commun. 23(2), 10–18 (2016)CrossRefGoogle Scholar
  3. 3.
    Ju, H., Zhang, R.: Throughput maximization in wireless powered communication networks. IEEE Trans. Wirel. Commun. 13(1), 418–428 (2014)CrossRefGoogle Scholar
  4. 4.
    Bi, S., Zhang, R.: Placement optimization of energy and information access points in wireless powered communication networks. IEEE Trans. Wirel. Commun. 15(3), 2351–2364 (2016)CrossRefGoogle Scholar
  5. 5.
    Bi, S., Zhang, Y.J., Zhang, R.: Distributed scheduling in wireless powered communication network: protocol design and performance analysis. In: Proceedings of IEEE WiOpt, Paris, France (2017)Google Scholar
  6. 6.
    Bi, S., Zhang, Y.J.: Computation rate maximization for wireless powered mobile-edge computing with binary computation offloading. IEEE Trans. Wirel. Commun. 17(6), 4177–4190 (2018)CrossRefGoogle Scholar
  7. 7.
    Bi, S., Zhang, R.: Node placement optimization in wireless powered communication networks. In: Proceedings of IEEE GLOBECOM, San Diego, USA (2015)Google Scholar
  8. 8.
    Ju, H., Zhang, R.: User cooperation in wireless powered communication networks. In: Proceedings of IEEE GLOBECOM, Austin, TX, USA, pp. 1430–1435 (2014)Google Scholar
  9. 9.
    Zhong, M., Bi, S., Lin, X.: User cooperation for enhanced throughput fairness in wireless powered communication networks. Springer Wirel. Netw. 23(4), 1315–1330 (2017)CrossRefGoogle Scholar
  10. 10.
    Yuan, L., Bi, S., Zhang, S., Lin, X., Wang, H.: Multi-antenna enabled cluster-based cooperation in wireless powered communication networks. IEEE Access 5, 13941–13950 (2017)CrossRefGoogle Scholar
  11. 11.
    Wu, Y., Chen, J., Qian, L.P., Huang, J., Shen, X.S.: Energy-aware cooperative traffic offloading via device-to-device cooperations: an analytical approach. IEEE Trans. Mobile Comput. 16(1), 97–114 (2017)CrossRefGoogle Scholar
  12. 12.
    Liu, V., Parks, A., Talla, V., Gollakota, S., Wetherall, D., Smith, J.R.: Ambient backscatter: wireless commumication out of thin air. In: Proceedings of ACM SIGCOMM, Hong Kong, pp. 39–50 (2013)CrossRefGoogle Scholar
  13. 13.
    Wang, G., Gao, F., Fan, R., Tellambura, C.: Ambient backscatter communication systems: detection and performance analysis. IEEE Trans. Commun. 64(11), 4836–4846 (2016)CrossRefGoogle Scholar
  14. 14.
    Abdulsattar, M.A.K., Hussein, Z.A.: Energy detector with baseband sampling for cognitive radio: real-time implemention. Wirel. Eng. Technol. 3(4), 229–239 (2012)CrossRefGoogle Scholar
  15. 15.
    Bi, S., Zhang, R.: Distributed charging control in broadband wireless power transfer networks. IEEE J. Sel. Areas Commun. 34(12), 3380–3393 (2016)CrossRefGoogle Scholar
  16. 16.
    Hoang, D.T., Niyato, D., Wang, P., Kim, D.I., Han, Z.: Ambient backscatter: a new approach to improve network performance for RF-powered cognitive radio networks. IEEE Trans. Commun. 65(9), 3659–3674 (2017)CrossRefGoogle Scholar

Copyright information

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

Authors and Affiliations

  1. 1.College of Information EngineeringShenzhen UniversityShenzhenChina

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