Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks

Javane Rostampoor, S. Mohammad Razavizadeh, Inkyu Lee

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This paper deals with the energy efficiency (EE) maximization problem in multiple-input multiple-output two-way relay networks with simultaneous wireless information and power transfer. The network consists of a multiple-antenna amplify-and-forward relay node which provides bidirectional communications between two multiple-antenna transceiver nodes. In addition, one of the transceivers is considered battery limited and has the capability of energy harvesting from the received signals. Assuming the network EE as the objective function, we design power splitting factor and optimum precoding matrices at the relay node and two transceivers. The constraints are transmit power of the nodes, harvested energy and quality of service of two transceivers. The resulting non-convex optimization problem is divided into three sub-problems which are then solved via an alternation approach. In addition, sufficient conditions for optimality are derived and the computational complexity of the proposed algorithm is analyzed. Simulation results are provided to evaluate the performance and confirm the efficiency of the proposed scheme as well as its convergence.

Original languageEnglish
Article number7876801
Pages (from-to)7888-7896
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Volume66
Issue number9
DOIs
Publication statusPublished - 2017 Sep 1

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Precoding
Relay Networks
MIMO systems
Transceivers
Energy Efficient
Multiple-input multiple-output (MIMO)
Multiple Antennas
Vertex of a graph
Energy Efficiency
Relay
Energy efficiency
Antennas
Energy Harvesting
Nonconvex Optimization
Telecommunication repeaters
Nonconvex Problems
Amplify-and-forward
Energy harvesting
Alternation
Battery

Keywords

  • convex optimization
  • energy efficiency
  • energy harvesting
  • multiple-input multiple-output (MIMO)
  • Simultaneous wireless information and power transfer (SWIPT)
  • two-way relay networks (TWRNs)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Computer Networks and Communications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks. / Rostampoor, Javane; Razavizadeh, S. Mohammad; Lee, Inkyu.

In: IEEE Transactions on Vehicular Technology, Vol. 66, No. 9, 7876801, 01.09.2017, p. 7888-7896.

Research output: Contribution to journalArticle

Rostampoor, Javane ; Razavizadeh, S. Mohammad ; Lee, Inkyu. / Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks. In: IEEE Transactions on Vehicular Technology. 2017 ; Vol. 66, No. 9. pp. 7888-7896.
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