Exploiting Direct Links in Multiuser Multirelay SWIPT Cooperative Networks With Opportunistic Scheduling

In this paper, we analyze the downlink outage performance of opportunistic scheduling in dual-hop cooperative networks consisting of one source, multiple radio-frequency energy harvesting relays, and multiple destinations. To this end, two low-complexity, suboptimal, yet efficient, relay-destination selection schemes are proposed, namely direct links plus opportunistic channel state information (CSI)-based selection (DOS) scheme and direct links plus partial CSI-based selection (DPS) scheme. Considering three relaying strategies, i.e., decode-and-forward (DF), variable-gain amplify-and-forward (VG-AF), and fixed-gain amplify-and-forward (FG-AF), the performance analysis in terms of outage probability (OP) is carried out for each selection scheme. For the DF and VG-AF strategies, exact analytical expressions and tight closed-form approximate expressions for the OP are derived. For the FG-AF strategy, an exact closed-form expression for the OP is provided. Additionally, we propose a gradient-based search method to find the optimal values of the power-splitting ratio that minimizes the attained OPs. The developed analysis is corroborated through Monte Carlo simulation. Comparisons with the optimal joint selection scheme are performed and it is shown that the proposed schemes significantly reduce the amount of channel estimations while achieving comparable outage performance. In addition, regardless of relaying strategy used, numerical results show that the DOS scheme achieves full diversity gain, i.e., <inline-formula> <tex-math notation="LaTeX">$M+K$ </tex-math></inline-formula>, and the DPS scheme achieves the diversity gain of <inline-formula> <tex-math notation="LaTeX">$M+1$ </tex-math></inline-formula>, where <inline-formula> <tex-math notation="LaTeX">$M$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula> are the numbers of destinations and relays, respectively.

[1]  Lizhong Zheng,et al.  Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels , 2003, IEEE Trans. Inf. Theory.

[2]  Mazen O. Hasna,et al.  A performance study of dual-hop transmissions with fixed gain relays , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[3]  Huaiyu Dai,et al.  Asymptotic Analysis on the Interaction Between Spatial Diversity and Multiuser Diversity in Wireless Networks , 2007, IEEE Transactions on Signal Processing.

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

[5]  Yang Yu,et al.  IEEE 802.16J relay-based wireless access networks: an overview , 2008, IEEE Wireless Communications.

[6]  Trung Quang Duong,et al.  On the performance of selection decode-and-forward relay networks over Nakagami-m fading channels , 2009, IEEE Communications Letters.

[7]  D. B. D. Costa,et al.  Capacity analysis of cooperative systems with relay selection in Nakagami-m fading , 2009, IEEE Commun. Lett..

[8]  Jinhong Yuan,et al.  Outage Probability of Multiuser Relay Networks in Nakagami- $m$ Fading Channels , 2010, IEEE Transactions on Vehicular Technology.

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

[10]  Daniel Benevides da Costa,et al.  A New Efficient Low-Complexity Scheme for Multi-Source Multi-Relay Cooperative Networks , 2011, IEEE Transactions on Vehicular Technology.

[11]  Daniel Benevides da Costa,et al.  Cognitive Amplify-and-Forward Relay Networks Over Nakagami- $m$ Fading , 2012, IEEE Transactions on Vehicular Technology.

[12]  Dongwoo Kim,et al.  Outage Performance of Opportunistic Cooperation in Amplify-and-Forward Relaying Systems with Relay Selection , 2012, IEEE Communications Letters.

[13]  Daniel Benevides da Costa,et al.  Spectrally Efficient Diversity Exploitation Schemes for Downlink Cooperative Cellular Networks , 2012, IEEE Transactions on Vehicular Technology.

[14]  Erik G. Larsson,et al.  Simultaneous Information and Power Transfer for Broadband Wireless Systems , 2012, IEEE Transactions on Signal Processing.

[15]  Wireless Information and Power Transfer: Architecture Design and Rate-Energy Tradeoff , 2013 .

[16]  Daniel Benevides da Costa,et al.  Cognitive Amplify-and-Forward Relaying with Best Relay Selection in Non-Identical Rayleigh Fading , 2013, IEEE Communications Letters.

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

[18]  Rui Zhang,et al.  MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer , 2013 .

[19]  Kee Chaing Chua,et al.  Wireless Information and Power Transfer: A Dynamic Power Splitting Approach , 2013, IEEE Transactions on Communications.

[20]  H. Vincent Poor,et al.  Power Allocation Strategies in Energy Harvesting Wireless Cooperative Networks , 2013, IEEE Transactions on Wireless Communications.

[21]  Bayan S. Sharif,et al.  Wireless Information and Power Transfer in Cooperative Networks With Spatially Random Relays , 2014, IEEE Transactions on Wireless Communications.

[22]  Branka Vucetic,et al.  Wireless-powered cooperative communications via a hybrid relay , 2014, 2014 IEEE Information Theory Workshop (ITW 2014).

[23]  Lajos Hanzo,et al.  Opportunistic Relay Selection for Cooperative Relaying in Cochannel Interference Contaminated Networks , 2014, IEEE Transactions on Vehicular Technology.

[24]  Khaled Ben Letaief,et al.  Space-Time Network Coding With Overhearing Relays , 2014, IEEE Transactions on Wireless Communications.

[25]  Derrick Wing Kwan Ng,et al.  Simultaneous wireless information and power transfer in modern communication systems , 2014, IEEE Communications Magazine.

[26]  Ioannis Krikidis,et al.  Simultaneous Information and Energy Transfer in Large-Scale Networks with/without Relaying , 2013, IEEE Transactions on Communications.

[27]  Khaled Ben Letaief,et al.  Wireless Information and Energy Transfer for Two-Hop Non-Regenerative MIMO-OFDM Relay Networks , 2014, IEEE Journal on Selected Areas in Communications.

[28]  He Chen,et al.  Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications , 2014, IEEE Transactions on Signal Processing.

[29]  Ioannis Krikidis,et al.  Relay Selection in Wireless Powered Cooperative Networks With Energy Storage , 2015, IEEE Journal on Selected Areas in Communications.

[30]  Zhu Han,et al.  Wireless Networks With RF Energy Harvesting: A Contemporary Survey , 2014, IEEE Communications Surveys & Tutorials.

[31]  Caijun Zhong,et al.  Wireless Information and Power Transfer in Relay Systems With Multiple Antennas and Interference , 2015, IEEE Transactions on Communications.

[32]  MinChul Ju,et al.  Maximum Transmission Rate of PSR/TSR Protocols in Wireless Energy Harvesting DF-Based Relay Networks , 2015, IEEE Journal on Selected Areas in Communications.

[33]  Sonia Aïssa,et al.  RF-Based Energy Harvesting in Decode-and-Forward Relaying Systems: Ergodic and Outage Capacities , 2015, IEEE Transactions on Wireless Communications.

[34]  He Chen,et al.  Distributed Power Splitting for SWIPT in Relay Interference Channels Using Game Theory , 2014, IEEE Transactions on Wireless Communications.

[35]  H. Vincent Poor,et al.  Cooperative Non-orthogonal Multiple Access With Simultaneous Wireless Information and Power Transfer , 2015, IEEE Journal on Selected Areas in Communications.

[36]  Ali A. Nasir,et al.  Joint Resource Optimization for Multicell Networks With Wireless Energy Harvesting Relays , 2014, IEEE Transactions on Vehicular Technology.

[37]  Mérouane Debbah,et al.  Energy efficient switching between data transmission and energy harvesting for cooperative cognitive relaying systems , 2016, 2016 IEEE International Conference on Communications (ICC).

[38]  Kuang-Hao Liu,et al.  Performance Analysis of Relay Selection for Cooperative Relays Based on Wireless Power Transfer With Finite Energy Storage , 2016, IEEE Transactions on Vehicular Technology.

[39]  H. Vincent Poor,et al.  Multi-User SWIPT Cooperative Networks: Is the Max–Min Criterion Still Diversity-Optimal? , 2016, IEEE Transactions on Wireless Communications.

[40]  D. Rajan.  Probability, Random Variables, and Stochastic Processes , 2017 .

[41]  Daniel Benevides da Costa,et al.  Opportunistic scheduling for fixed-gain amplify-and-forward-based multiuser multirelay SWIPT cooperative networks , 2017, 2017 International Conference on Recent Advances in Signal Processing, Telecommunications & Computing (SigTelCom).

[42]  He Chen,et al.  Distributed Multi-Relay Selection in Accumulate-Then-Forward Energy Harvesting Relay Networks , 2016, IEEE Transactions on Green Communications and Networking.