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On outage minimization in RF energy harvesting relay assisted bidirectional communication

  • Sutanu GhoshEmail author
  • Tamaghna Acharya
  • Santi P. Maity
Article
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Abstract

This paper explores an end-to-end outage probability experienced in a bidirectional relay assisted communication where the relay is assumed to be equipped with an RF energy harvesting circuit. First, the closed-form expression for the outage of the system is derived. This is followed by the formulation of an unconstrained optimization problem to achieve minimum outage probability with respect to the relay placement and consequent time allocation for energy harvesting. The system model is further extended in an underlay cognitive radio framework to study the impact of a primary user outage constraint on the end-to-end outage performance of the two-way communications. The accuracy of analytical results is validated through simulation results. The impact of various system parameters like relay position, time allocation factor, target rate of transmission on the outage probability is also observed. In addition, it is also shown that spectral efficiency of the communication system using hybrid power-time switching relaying protocol is much superior to similar one-way and two-way relay assisted communication system with power splitting relaying protocol.

Keywords

Energy harvesting Simultaneous wireless information and power transfer Outage performance Two way half-duplex relaying 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Sutanu Ghosh
    • 1
    Email author
  • Tamaghna Acharya
    • 1
  • Santi P. Maity
    • 1
  1. 1.Indian Institute of Engineering Science and Technology, ShibpurHowrahIndia

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