TY - JOUR
T1 - Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks
AU - Rostampoor, Javane
AU - Razavizadeh, S. Mohammad
AU - Lee, Inkyu
N1 - Funding Information:
Manuscript received July 17, 2016; revised December 15, 2016; accepted February 14, 2017. Date of publication March 13, 2017; date of current version September 15, 2017. The work of I. Lee was supported by the National Research Foundation (NRF) funded by the Ministry of Science, ICT, and Future Planning, Korean Government, under Grant 2014R1A2A1A10049769. The review of this paper was coordinated by Prof. H.-F. Lu.
Publisher Copyright:
© 2017 IEEE.
PY - 2017/9
Y1 - 2017/9
N2 - 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.
AB - 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.
KW - Simultaneous wireless information and power transfer (SWIPT)
KW - convex optimization
KW - energy efficiency
KW - energy harvesting
KW - multiple-input multiple-output (MIMO)
KW - two-way relay networks (TWRNs)
UR - http://www.scopus.com/inward/record.url?scp=85029938692&partnerID=8YFLogxK
U2 - 10.1109/TVT.2017.2681942
DO - 10.1109/TVT.2017.2681942
M3 - Article
AN - SCOPUS:85029938692
SN - 0018-9545
VL - 66
SP - 7888
EP - 7896
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 9
M1 - 7876801
ER -
