Wireless information and power transfer in cooperative networks with spatially random relays

Zhiguo Ding, Ioannis Krikidis, Bayan Sharif, H. Vincent Poor

Research output: Contribution to journalArticle

230 Scopus citations

Abstract

In this paper, the application of wireless information and power transfer to cooperative networks is investigated, where the relays in the network are randomly located and based on the decode-forward strategy. For the scenario with one source-destination pair, three different strategies for using the available relays are studied, and their impact on the outage probability and diversity gain is characterized by applying stochastic geometry. By using the assumptions that the path loss exponent is two and that the relay-destination distances are much larger than the source-relay distances, closed form analytical results can be developed to demonstrate that the use of energy harvesting relays can achieve the same diversity gain as the case with conventional self-powered relays. For the scenario with multiple sources, the relays can be viewed as a type of scarce resource, where the sources compete with each other to get help from the relays. Such a competition is modeled as a coalition formation game, and two distributed game theoretic algorithms are developed based on different payoff functions. Simulation results are provided to confirm the accuracy of the developed analytical results and facilitate a better performance comparison.

Original languageEnglish (US)
Article number6779694
Pages (from-to)4440-4453
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume13
Issue number8
DOIs
StatePublished - Aug 2014

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Cooperative networks
  • Diversity gains
  • Game theory
  • Stochastic geometry
  • Wireless information and power transfer

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