Stability analysis and power optimization for energy harvesting cooperative networks

Ioannis Krikidis*, Themistoklis Charalambous, John S. Thompson

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

64 Citations (Scopus)

Abstract

In this letter, we investigate the effects of network-layer cooperation in a wireless three-node network with energy-harvesting nodes and bursty data traffic. By modelling energy harvesting in each node as a queue (buffer) that stores the received energy, we study the interaction between data and energy queues when only knowledge of the arrival rates is available. The maximum stable throughput (in packets/slot) of the source as well as the required transmitted power for both a non-cooperative and an orthogonal decode-and-forward cooperative schemes are derived in closed-form. We prove that cooperation achieves a higher maximum stable throughout than direct link for scenarios with poor energy arrival rates.

Original languageEnglish
Article number6072241
Pages (from-to)20-23
Number of pages4
JournalIEEE Signal Processing Letters
Volume19
Issue number1
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Keywords

  • Cooperative networks
  • energy harvesting
  • power optimization
  • stable throughput

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