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 networks with energy harvesting and power transfer joint power and time allocation"
  Abstract: In this letter, we consider wireless powered communication networks which could operate perpetually, as the base station (BS) broadcasts energy to the multiple energy harvesting (EH) information transmitters. These employ “harvest then transmit” mechanism, as they spend all of their energy harvested during the previous BS energy broadcast to transmit the information towards the BS. Assuming time division multiple access (TDMA), we propose a novel transmission scheme for jointly optimal allocation of the BS broadcasting power and time sharing among the wireless nodes, which maximizes the overall network throughput, under the constraint of average transmit power and maximum transmit power at the BS. The proposed scheme significantly outperforms “state of the art” schemes that employ only the optimal time allocation. If a single EH transmitter is considered, we generalize the optimal solutions for the case of fixed circuit power consumption, which refers to a much more practical scenario.

Connected through hyperedge HE-1 (induced by source paper "sequencing and scheduling for multi user machine type communication"):
  with members:
    - "optimal compression and transmission rate control for node lifetime maximization"
    - "energy harvesting wireless sensor networks delay analysis considering energy costs of sensing and transmission"
    - "energy efficient resource allocation for wireless powered communication networks"
    - "throughput maximization in wireless powered communication networks"

Connected through hyperedge HE-2 (induced by source paper "optimal fairness aware time and power allocation in wireless powered communication networks"):
  with members:
    - "adaptively directional wireless power transfer for large scale sensor networks"
    - "wireless powered communication networks an overview"
    - "artificial noise aided secrecy information and power transfer in ofdma systems"
    - "wireless powered communication opportunities and challenges"
    - "energy harvesting for physical layer security in ofdma networks"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "throughput maximization in wireless powered communication networks"
    - "asymptotically optimal power allocation for energy harvesting communication networks"

Connected through hyperedge HE-3 (induced by source paper "learning to communicate in uav aided wireless networks map based approaches"):
  with members:
    - "on the number and 3d placement of drone base stations in wireless cellular networks"
    - "minimum throughput maximization in uav aided wireless powered communication networks"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "energy efficient uav communication with trajectory optimization"
    - "optimal transport theory for power efficient deployment of unmanned aerial vehicles"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"
    - "unmanned aerial vehicle with underlaid device to device communications performance and tradeoffs"

Connected through hyperedge HE-4 (induced by source paper "optimal user scheduling in energy harvesting wireless networks"):
  with members:
    - "spectral and energy efficient wireless powered iot networks noma or tdma"
    - "robust resource allocation for mimo wireless powered communication networks based on a non linear eh model"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "full duplex wireless powered communication network with energy causality"
    - "throughput maximization in wireless powered communication networks"
    - "optimal save then transmit protocol for energy harvesting wireless transmitters"

Connected through hyperedge HE-5 (induced by source paper "d2d communications underlaying wireless powered communication networks"):
  with members:
    - "on the performance of multi antenna wireless powered communications with energy beamforming"
    - "wireless powered communication opportunities and challenges"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "throughput maximization in wireless powered communication networks"
    - "simultaneous information and power transfer for broadband wireless systems"

Connected through hyperedge HE-6 (induced by source paper "wireless powered communications with finite battery and finite blocklength"):
  with members:
    - "ultra reliable short message relaying with wireless power transfer"
    - "wireless powered two way relaying with power splitting based energy accumulation"
    - "accumulate then forward an opportunistic relaying protocol for wireless powered cooperative communications"
    - "wireless powered relaying with finite block length codes"
    - "blocklength limited performance of relaying under quasi static rayleigh channels"
    - "on wirelessly powered communications with short packets"
    - "towards massive ultra reliable and low latency wireless communication with short packets"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"

Connected through hyperedge HE-7 (induced by source paper "end to end throughput maximization for underlay multi hop cognitive radio networks with rf energy harvesting"):
  with members:
    - "resource allocation and fairness in wireless powered cooperative cognitive radio networks"
    - "optimal time sharing in underlay cognitive radio systems with rf energy harvesting"
    - "cognitive wireless powered network spectrum sharing models and throughput maximization"
    - "wireless powered communications performance analysis and optimization"
    - "harvest then cooperate wireless powered cooperative communications"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "full duplex wireless powered communication network with energy causality"

Connected through hyperedge HE-8 (induced by source paper "joint spectrum allocation and structure optimization in green powered heterogeneous cognitive radio networks"):
  with members:
    - "backhaul aware user association and resource allocation for energy constrained hetnets"
    - "toward hierarchical mobile edge computing an auction based profit maximization approach"
    - "optimal cooperative power allocation for energy harvesting enabled relay networks"
    - "joint spectrum and power allocation for multi node cooperative wireless systems"
    - "on green energy powered cognitive radio networks"
    - "qos aware base station selections for distributed mimo links in broadband wireless networks"
    - "maximizing system throughput by cooperative sensing in cognitive radio networks"

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)