Distributed relay selection protocols for simultaneous wireless information and power transfer

Harvesting energy from the radio-frequency (RF) signal is an exciting solution to replenish energy in energy-constrained wireless networks. In this paper, an amplify-and-forward (AF) based wireless relay network is considered, where the relay nodes need to harvest energy from the source's RF signal to forward information to the destination. To improve the performance of information transmission, we propose two distributed relay selection protocols, Maximum Harvested Energy (MHE) protocol and Maximum Signal-to-Noise Ratio (MSNR) protocol. Then, we derive the outage probabilities of the system with our proposed relay selection protocols and prove that the proposed selection protocols indeed can improve the system performances and the MSNR protocol outperforms the MHE protocol. Simulation results verify the analysis and theorems. In addition, the effects of key system parameters are also investigated via simulations.

[1]  Ian F. Akyildiz,et al.  Sensor Networks , 2002, Encyclopedia of GIS.

[2]  Shuguang Cui,et al.  Energy-Efficient Cooperative Communication Based on Power Control and Selective Single-Relay in Wireless Sensor Networks , 2008, IEEE Transactions on Wireless Communications.

[3]  R. Durrett Probability: Theory and Examples , 1993 .

[4]  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).

[5]  Ali A. Nasir,et al.  Relaying Protocols for Wireless Energy Harvesting and Information Processing , 2012, IEEE Transactions on Wireless Communications.

[6]  Anant Sahai,et al.  Shannon meets Tesla: Wireless information and power transfer , 2010, 2010 IEEE International Symposium on Information Theory.

[7]  I. S. Gradshteyn,et al.  Table of Integrals, Series, and Products , 1976 .

[8]  Mischa Dohler,et al.  Cooperative Communications: Hardware, Channel and PHY , 2010 .

[9]  H. Vincent Poor,et al.  Simultaneous information and power transfer in wireless cooperative networks , 2013, 2013 8th International Conference on Communications and Networking in China (CHINACOM).

[10]  Robert Schober,et al.  Relay Selection for Simultaneous Information Transmission and Wireless Energy Transfer: A Tradeoff Perspective , 2013, IEEE Journal on Selected Areas in Communications.

[11]  Lav R. Varshney,et al.  Transporting information and energy simultaneously , 2008, 2008 IEEE International Symposium on Information Theory.

[12]  Jing Yang,et al.  Transmission with Energy Harvesting Nodes in Fading Wireless Channels: Optimal Policies , 2011, IEEE Journal on Selected Areas in Communications.

[13]  Zhu Han,et al.  A Distributed Relay-Assignment Algorithm for Cooperative Communications in Wireless Networks , 2006, 2006 IEEE International Conference on Communications.

[14]  Neelesh B. Mehta,et al.  Voluntary Energy Harvesting Relays and Selection in Cooperative Wireless Networks , 2010, IEEE Transactions on Wireless Communications.

[15]  Björn E. Ottersten,et al.  Beamforming for MISO Interference Channels with QoS and RF Energy Transfer , 2013, IEEE Transactions on Wireless Communications.

[16]  Aggelos Bletsas,et al.  A simple Cooperative diversity method based on network path selection , 2005, IEEE Journal on Selected Areas in Communications.

[17]  Raviraj S. Adve,et al.  Improving amplify-and-forward relay networks: optimal power allocation versus selection , 2006, IEEE Transactions on Wireless Communications.

[18]  Yindi Jing,et al.  Single and multiple relay selection schemes and their achievable diversity orders , 2009, IEEE Transactions on Wireless Communications.

[19]  Yindi Jing,et al.  Single and Multiple Relay Selection Schemes and their Diversity Orders , 2008, ICC Workshops - 2008 IEEE International Conference on Communications Workshops.