human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "wireless information and power transfer in relay systems with multiple antennas and interference"
  Abstract: In this paper, an energy harvesting dual-hop relaying system without/with the presence of co-channel interference (CCI) is investigated. Specifically, the energy constrained multi-antenna relay node is powered by either the information signal of the source or via the signal receiving from both the source and interferer. In particular, we first study the outage probability and ergodic capacity of an interference free system, and then extend the analysis to an interfering environment. To exploit the benefit of multiple antennas, three different linear processing schemes are investigated, namely, 1) Maximum ratio combining/maximum ratio transmission (MRC/MRT), 2) Zero-forcing/MRT (ZF/MRT) and 3) Minimum mean-square error/MRT (MMSE/MRT). For all schemes, both the systems outage probability and ergodic capacity are studied, and the achievable diversity order is also presented. In addition, the optimal power splitting ratio minimizing the outage probability is characterized. Our results show that the implementation of multiple antennas increases the energy harvesting capability, hence, significantly improves the systems performance. Moreover, it is demonstrated that the CCI could be potentially exploited to substantially boost the performance, while the choice of a linear processing scheme plays a critical role in determining how much gain could be extracted from the CCI.

Connected through hyperedge HE-1 (induced by source paper "on maximizing information reliability in wireless powered cooperative networks"):
  with members:
    - "sensitive and nonlinear far field rf energy harvesting in wireless communications"
    - "ergodic capacity analysis of wireless powered af relaying systems over alpha µ fading channels"
    - "joint relay selection and power allocation in large scale mimo systems with untrusted relays and passive eavesdroppers"
    - "error performance of wireless powered cognitive relay networks with interference alignment"
    - "minimizing outage probability by exploiting csi in wireless powered cooperative networks"
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "practical non linear energy harvesting model and resource allocation for swipt systems"
    - "power allocation strategies in energy harvesting wireless cooperative networks"

Connected through hyperedge HE-2 (induced by source paper "performance analysis of energy harvesting underlay cooperative cognitive radio relay networks with randomly located nodes"):
  with members:
    - "interference aided energy harvesting cognitive relaying with multiple primary transceivers"
    - "wireless energy harvesting in a cognitive relay network"
    - "relay selection in wireless powered cooperative networks with energy storage"
    - "rf powered cognitive radio networks technical challenges and limitations"
    - "opportunistic wireless energy harvesting in cognitive radio networks"
    - "relaying protocols for wireless energy harvesting and information processing"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-3 (induced by source paper "wireless powered dual hop multi antenna relaying systems impact of csi and antenna correlation"):
  with members:
    - "on the performance of multi antenna wireless powered communications with energy beamforming"
    - "an overview of sustainable green 5g networks"
    - "training based swipt optimal power splitting at the receiver"
    - "joint wireless information and power transfer for an autonomous multiple antenna relay system"
    - "wireless powered communications performance analysis and optimization"
    - "energy efficient resource allocation for wireless powered communication networks"
    - "harvest then cooperate wireless powered cooperative communications"
    - "wireless networks with rf energy harvesting a contemporary survey"

Connected through hyperedge HE-4 (induced by source paper "achievable rate region of non orthogonal multiple access systems with wireless powered decoder"):
  with members:
    - "wireless powered communication networks an overview"
    - "communications and signals design for wireless power transmission"
    - "cooperative non orthogonal multiple access with simultaneous wireless information and power transfer"
    - "practical non linear energy harvesting model and resource allocation for swipt systems"
    - "fairness for non orthogonal multiple access in 5g systems"
    - "collaborative wireless energy and information transfer in interference channel"
    - "outage minimization for a fading wireless link with energy harvesting transmitter and receiver"
    - "uplink non orthogonal multiple access for 5g wireless networks"

Connected through hyperedge HE-5 (induced by source paper "distributed beamforming with wirelessly powered relay nodes"):
  with members:
    - "a scalable architecture for distributed receive beamforming analysis and experimental demonstration"
    - "relaying protocols for wireless energy harvesting and information processing"

Connected through hyperedge HE-6 (induced by source paper "distributed multi relay selection in accumulate then forward energy harvesting relay networks"):
  with members:
    - "wireless powered communication opportunities and challenges"
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "relay selection in wireless powered cooperative networks with energy storage"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "full duplex mimo relaying powered by wireless energy transfer"
    - "wireless powered communications performance analysis and optimization"
    - "joint power splitting and antenna selection in energy harvesting relay channels"
    - "wireless information and energy transfer for two hop non regenerative mimo ofdm relay networks"

Connected through hyperedge HE-7 (induced by source paper "throughput analysis and optimization of wireless powered multiple antenna full duplex relay systems"):
  with members:
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "full duplex radio for uplink downlink wireless access with spatially random nodes"
    - "harvest then cooperate wireless powered cooperative communications"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "cutting last wires for mobile communication by microwave power transfer"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "full duplex wireless powered relay with self energy recycling"

Connected through hyperedge HE-8 (induced by source paper "minimizing outage probability by exploiting csi in wireless powered cooperative networks"):
  with members:
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "wireless information and power transfer with full duplex relaying"
    - "throughput maximization in wireless powered communication networks"
    - "relaying protocols for wireless energy harvesting and information processing"
    - "relay selection for simultaneous information transmission and wireless energy transfer a tradeoff perspective"
    - "wireless information and power transfer a dynamic power splitting approach"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.IT(Information Theory)