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 power meets energy harvesting a joint energy allocation approach in ofdm based system"
  Abstract: This paper investigates an orthogonal frequency division multiplexing (OFDM)-based wireless powered communication system, where one user harvests energy from an energy access point (EAP) to power its information transmission to a data access point (DAP). The channels from the EAP to the user, i.e., the wireless energy transfer (WET) link, and from the user to the DAP, i.e., the wireless information transfer (WIT) link, vary over both time slots and subchannels (SCs) in general. To avoid interference at DAP, WET and WIT are scheduled over orthogonal SCs at any slot. Our objective is to maximize the achievable rate at the DAP by jointly optimizing the SC allocation over time, and the power allocation over time and SCs, for both WET and WIT links. Assuming availability of full channel state information (CSI), the structural results for the optimal SC/power allocation are obtained and an offline algorithm is proposed to solve the problem. Furthermore, we propose a low-complexity online algorithm when causal CSI is available.

Connected through hyperedge HE-1 (induced by source paper "optimal energy allocation and task offloading policy for wireless powered mobile edge computing systems"):
  with members:
    - "joint communication and computation optimization for wireless powered mobile edge computing with d2d offloading"
    - "optimal resource allocation for wireless powered mobile edge computing with dynamic task arrivals"
    - "fundamentals of wireless information and power transfer from rf energy harvester models to signal and system designs"
    - "joint computation and communication cooperation for energy efficient mobile edge computing"
    - "multiuser computation offloading and downloading for edge computing with virtualization"
    - "deep reinforcement learning for online offloading in wireless powered mobile edge computing networks"
    - "online learning for offloading and autoscaling in energy harvesting mobile edge computing"
    - "a survey on mobile edge computing the communication perspective"

Connected through hyperedge HE-2 (induced by source paper "online policies for throughput maximization of energy constrained wireless powered communication systems"):
  with members:
    - "optimization of energy constrained wireless powered communication networks with heterogeneous nodes"
    - "resource allocation and fairness in wireless powered cooperative cognitive radio networks"
    - "battery powered devices in wpcns"
    - "on optimal policies in full duplex wireless powered communication networks"
    - "an overview of sustainable green 5g networks"
    - "dynamic base station operation in large scale green cellular networks"
    - "optimal design of non orthogonal multiple access with wireless power transfer"
    - "energy efficient resource allocation for wireless powered communication networks"

Connected through hyperedge HE-3 (induced by source paper "throughput optimization in fdd mu miso wireless powered communication networks"):
  with members:
    - "wireless powered communication networks tdd or fdd"
    - "maximizing ergodic throughput in wireless powered communication networks"
    - "distributed wireless power transfer with energy feedback"
    - "on the feasibility of wireless energy transfer using massive antenna arrays"
    - "a general design framework for mimo wireless energy transfer with limited feedback"
    - "wireless powered communication networks an overview"
    - "wireless powered communication opportunities and challenges"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"

Connected through hyperedge HE-4 (induced by source paper "maximizing ergodic throughput in wireless powered communication networks"):
  with members:
    - "beamforming optimization for full duplex wireless powered mimo systems"
    - "wireless powered communication networks an overview"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"
    - "joint beamforming design and time allocation for wireless powered communication networks"
    - "optimized training design for wireless energy transfer"
    - "throughput maximization in wireless powered communication networks"
    - "energy efficient optimization for wireless information and power transfer in large scale mimo systems employing energy beamforming"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-5 (induced by source paper "resource allocation for solar powered uav communication systems"):
  with members:
    - "robust and secure resource allocation for full duplex miso multicarrier noma systems"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "securing uav communications via trajectory optimization"
    - "on optimal power allocation for downlink non orthogonal multiple access systems"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "optimal joint power and subcarrier allocation for full duplex multicarrier non orthogonal multiple access systems"

Connected through hyperedge HE-6 (induced by source paper "optimizing joint data and power transfer in energy harvesting multiuser wireless networks"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "distributed power control in interference channels with qos constraints and rf energy harvesting a game theoretic approach"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "power allocation strategies in energy harvesting wireless cooperative networks"
    - "throughput maximization in wireless powered communication networks"
    - "wireless information and power transfer energy efficiency optimization in ofdma systems"
    - "wireless information transfer with opportunistic energy harvesting"

Connected through hyperedge HE-7 (induced by source paper "battery powered devices in wpcns"):
  with members:
    - "optimal energy and data routing in networks with energy cooperation"
    - "decentralized transmission policies for energy harvesting devices"
    - "on the effects of battery imperfections in an energy harvesting device"
    - "achievable secrecy rates of an energy harvesting device"
    - "wireless powered communication opportunities and challenges"
    - "optimal adaptive random multiaccess in energy harvesting wireless sensor networks"
    - "energy harvesting wireless communications a review of recent advances"
    - "energy harvesting networks with energy cooperation procrastinating policies"

Connected through hyperedge HE-8 (induced by source paper "distributed charging control in broadband wireless power transfer networks"):
  with members:
    - "wireless powered communication networks an overview"
    - "wireless powered communication opportunities and challenges"
    - "energy harvesting wireless communications a review of recent advances"
    - "placement optimization of energy and information access points in wireless powered communication networks"
    - "harvest then cooperate wireless powered cooperative communications"
    - "optimized training for net energy maximization in multi antenna wireless energy transfer over frequency selective channel"
    - "simultaneous wireless information and power transfer in modern communication systems"
    - "energy beamforming with one bit feedback"

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)