Dynamic Power Splitting for Three-Step Two-Way Multiplicative AF Relay Networks

This paper considers a three-step two-way network utilizing an energy harvesting (EH) multiplicative amplify-and-forward (AF) relay. Based on the instantaneous channel state information (CSI), we study a dynamic power splitting (DPS) scheme on how the relay adjusts the power splitting (PS) ratio, achieving a real-time trade-off between the harvested energy and the power of the retransmitted signal. Taking into account a guarantee that both terminals decode the information at the same time, we aim to optimize the worse end-to-end signal-to-noise ratio (SNR) of the two links. As this optimization problem is non-convex and difficult to be solved, an equivalent problem is formulated and an efficient Dinkelbach-based iterative algorithm is proposed to obtain the optimal PS ratio. Simulation results show that the proposed DPS scheme outperforms the exsiting static PS scheme and highlight the effectiveness of the proposed iterative algorithm.

[1]  Juan Li,et al.  Joint optimal power allocation and relay selection scheme in energy harvesting asymmetric two-way relaying system , 2015, IET Commun..

[2]  Frédéric Lehmann,et al.  A Factor Graph Approach to Iterative Channel Estimation, Detection, and Decoding for Two-Path Successive Relay Networks , 2016, IEEE Transactions on Wireless Communications.

[3]  Jianhua Ge,et al.  Energy-Efficient Power Allocation in Energy Harvesting Two-Way AF Relay Systems , 2017, IEEE Access.

[4]  Ming Xiao,et al.  Performance Analysis of Antenna Selection in Two-Way Relay Networks , 2015, IEEE Transactions on Signal Processing.

[5]  Min Young Chung,et al.  Information Processing and Wireless Energy Harvesting in Two-Way Amplify-and-Forward Relay Networks , 2016, 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring).

[6]  Iickho Song,et al.  Simultaneous Wireless Transfer of Power and Information in a Decode-and-Forward Two-Way Relaying Network , 2017, IEEE Transactions on Wireless Communications.

[7]  Syed Faraz Hasan,et al.  Energy harvesting and information processing in two-way multiplicative relay networks , 2016 .

[8]  Werner Dinkelbach.  On Nonlinear Fractional Programming , 1967 .

[9]  Lifeng Wang,et al.  Two-way relaying networks with wireless power transfer: Policies design and throughput analysis , 2014, 2014 IEEE Global Communications Conference.

[10]  Subramaniam Shamala,et al.  A Survey and Taxonomy on Medium Access Control Strategies for Cooperative Communication in Wireless Networks: Research Issues and Challenges , 2016, IEEE Communications Surveys & Tutorials.

[11]  Dan Wang,et al.  Power splitting protocol design for the cooperative NOMA with SWIPT , 2017, 2017 IEEE International Conference on Communications (ICC).

[12]  Petar Popovski,et al.  Physical Network Coding in Two-Way Wireless Relay Channels , 2007, 2007 IEEE International Conference on Communications.

[13]  Syed Faraz Hasan,et al.  Three-Step Two-Way Decode and Forward Relay With Energy Harvesting , 2017, IEEE Communications Letters.

[14]  Ahmed E. Kamal,et al.  Wireless RF-based energy harvesting for two-way relaying systems , 2016, 2016 IEEE Wireless Communications and Networking Conference.

[15]  Xiaofei Zhang,et al.  Two-way relay networks based on product relay , 2015 .

[16]  Bin Xia,et al.  Wireless information and power transfer in two-way amplify-and-forward relaying channels , 2013, 2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP).

[17]  Huaping Liu,et al.  Optimal Power Splitting in Two-Way Decode-and-Forward Relay Networks , 2017, IEEE Communications Letters.

[18]  Xiaohu You,et al.  Energy-Efficient Joint Resource Allocation and Power Control for D2D Communications , 2016, IEEE Transactions on Vehicular Technology.

[19]  Fuhui Zhou,et al.  Robust AN-Aided Beamforming and Power Splitting Design for Secure MISO Cognitive Radio With SWIPT , 2016, IEEE Transactions on Wireless Communications.