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Optimal Time Allocation in Backscatter Assisted Wireless Powered Communication Networks.

Bin Lyu1, Zhen Yang2, Guan Gui3

  • 1Key Laboratory of Ministry of Education in Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China. 13010511@njupt.edu.cn.

Sensors (Basel, Switzerland)
|June 8, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a wireless powered communication network using backscatter communication, optimizing time allocation for enhanced throughput. The proposed model demonstrates superior performance in simulations.

Keywords:
backscatter communicationharvest-then-transmit modeoptimal time allocation policywireless powered communication network

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Area of Science:

  • Wireless communication networks
  • Information theory
  • Energy harvesting

Background:

  • Wireless powered communication networks (WPCN) face challenges in energy efficiency and data transmission.
  • Backscatter communication (BackCom) offers a low-power solution for data transmission by reflecting incident signals.

Purpose of the Study:

  • To propose and analyze a WPCN model integrating backscatter communication (BackCom).
  • To optimize system throughput by determining optimal time allocation policies.

Main Methods:

  • The proposed model includes a power station, information receiver, and multiple users operating in BackCom or harvest-then-transmit (HTT) modes.
  • Time is divided into data backscattering and transmission periods, utilizing time division multiple access (TDMA) and non-orthogonal multiple access (NOMA).

Main Results:

  • Users backscatter data in TDMA during the backscattering period, while others harvest energy.
  • The system achieves maximized throughput through optimal time allocation policies.
  • Simulation results validate the proposed model's effectiveness.

Conclusions:

  • The integrated WPCN with BackCom significantly enhances system throughput.
  • Optimal time allocation is crucial for maximizing performance in such networks.
  • The proposed model presents a superior approach for wireless powered communication systems.