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: "multiuser communication through power talk in dc microgrids"
  Abstract: Power talk is a novel ultra narrow-band powerline communication (UNB-PLC) technique for communication among control units in MicroGrids (MGs). Unlike the existing UNB-PLC solutions, power talk does not require installation of additional dedicated communication hardware and, instead, uses only the power electronic converters through which the control units interface the common bus. This way the communication system has practically the same reliability as the power system. The information is transmitted by modulating the parameters of the primary control, incurring subtle power deviations that can be detected by other units. In this paper, we develop power talk communication strategies for direct-current (DC) MG systems with arbitrary number of control units that carry out all-to-all communication. We investigate two multiple access strategies: time-division multiple access, where only one unit transmits at a time, and full duplex, where all units transmit and receive simultaneously. We apply the concepts of signaling space, where the power talk symbol constellations are constructed, and detection space, where the demodulation of the symbols is performed. The proposed communication technique is challenged by the random changes of the bus parameters due to load variations. To this end, we investigate the performance of power talk when a solution based on training sequences that re-establishes detection spaces is employed. The presented evaluation shows that power talk has a potential to offer an effective and inexpensive solution for reliable communication among units in DC MGs.

Connected through hyperedge HE-1 (induced by source paper "software defined microgrid control for resilience against cyber attacks"):
  with members:
    - "anti jamming strategy for distributed microgrid control based on power talk communication"
    - "on the impact of wireless jamming on the distributed secondary microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"

Connected through hyperedge HE-2 (induced by source paper "making the grid truly smart autonomous system identification in modemless dc microgrids"):
  with members:
    - "transient stability guarantees for ad hoc dc microgrids"
    - "power talk for multibus dc microgrids creating and optimizing communication channels"
    - "modemless multiple access communications over powerlines for dc microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "multi agent distributed optimization via inexact consensus admm"
    - "for the grid and through the grid the role of power line communications in the smart grid"

Connected through hyperedge HE-3 (induced by source paper "modemless multiple access communications over powerlines for dc microgrid control"):
  with members:
    - "power talk for multibus dc microgrids creating and optimizing communication channels"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "power talk in dc micro grids constellation design and error probability performance"
    - "for the grid and through the grid the role of power line communications in the smart grid"

Connected through hyperedge HE-4 (induced by source paper "anti jamming strategy for distributed microgrid control based on power talk communication"):
  with members:
    - "on the impact of wireless jamming on the distributed secondary microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "power talk in dc micro grids constellation design and error probability performance"

Connected through hyperedge HE-5 (induced by source paper "power talk for multibus dc microgrids creating and optimizing communication channels"):
  with members:
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "power talk in dc micro grids constellation design and error probability performance"
    - "for the grid and through the grid the role of power line communications in the smart grid"

Connected through hyperedge HE-6 (induced by source paper "secure and robust authentication for dc microgrids based on power talk communication"):
  with members:
    - "on the impact of wireless jamming on the distributed secondary microgrid control"
    - "power talk how to modulate data over a dc micro grid bus using power electronics"
    - "power talk in dc micro grids constellation design and error probability performance"

Connected through hyperedge HE-7 (induced by source paper "power talk in dc micro grids constellation design and error probability performance"):
  with members:
    - "power talk how to modulate data over a dc micro grid bus using power electronics"

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)