Throughput Maximization in Multicarrier Wireless Powered Relaying Networks

Panagiotis D. Diamantoulakis, Georgia D. Ntouni, Koralia N. Pappi, George K. Karagiannidis, Bayan S. Sharif

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Dynamic power allocation and power splitting, in a multicarrier two-hop link with a wireless powered relay, is investigated. We first formulate the corresponding optimization problem, which consists of the joint optimization-in terms of achievable rate-of, 1) the dynamic power allocation among multiple channels and, 2) the selection of the power splitting ratio between information processing and energy harvesting at the relay, when amplify-And-forward is applied. This is a non-convex optimization problem, which is mapped to a convex one and optimally solved using one-dimensional search and dual decomposition, while a suboptimal efficient iterative method is also proposed. Simulations reveal a significant increase in the throughput, when comparing the proposed approach with two alternative power allocation schemes, while they verify the effectiveness of the fast-converging iterative solution.

Original languageBritish English
Article number7088588
Pages (from-to)385-388
Number of pages4
JournalIEEE Wireless Communications Letters
Volume4
Issue number4
DOIs
StatePublished - 1 Aug 2015

Keywords

  • amplify-And-forward
  • power allocation
  • relay
  • wireless power transfer

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