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: "coverage and spectral efficiency of indoor mmwave networks with ceiling mounted access points"
  Abstract: Provisioning of high throughput millimetre-wave signal to indoor areas that potentially serve a large number of users, such as transportation hubs or convention centres, will require dedicated indoor millimetre-wave access point deployments. In this article, we study dense deployments of millimetre-wave access points mounted on the ceiling and illuminating selected spots on the ground with the use of fixed directional antennas. In this setup, the main factor limiting signal propagation are blockages by human bodies. We evaluate our system under a number of scenarios that take into account beamwidth of the main-lobe, access point density, and positioning of the mobile device with respect to the user's body. We find that both coverage and area spectral efficiency curves exhibit non-trivial behaviour which can be classified into four regions related to the selection of access point density, beamwidth, and height values. Furthermore, we observe a trade-off in beamwidth design, as the optimal beamwidth maximizes either coverage or area spectral efficiency, but not both. Finally, when we consider different body shadowing scenarios, our network design optimizes coverage or area spectral efficiency performance towards either devices held in hand or worn directly against the body, as each of the scenarios requires mutually exclusive settings of access point density and beamwidth.

Connected through hyperedge HE-1 (induced by source paper "performance analysis of indoor mmwave networks with ceiling mounted access points"):
  with members:
    - "modeling and analyzing millimeter wave cellular systems"
    - "analysis of human body blockage in urban millimeter wave cellular communications"
    - "device to device millimeter wave communications interference coverage rate and finite topologies"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "analysis of blockage effects on urban cellular networks"

Connected through hyperedge HE-2 (induced by source paper "optimized deployment of millimeter wave networks for in venue regions with stochastic users orientation"):
  with members:
    - "a vision of 6g wireless systems applications trends technologies and open research problems"
    - "beyond 5g with uavs foundations of a 3d wireless cellular network"
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "enclosed mmwave wearable networks feasibility and performance"
    - "rapid fading due to human blockage in pedestrian crowds at 5g millimeter wave frequencies"
    - "coverage in downlink heterogeneous mmwave cellular networks with user centric small cell deployment"
    - "context aware scheduling of joint millimeter wave and microwave resources for dual mode base stations"
    - "analysis of human body blockage in urban millimeter wave cellular communications"

Connected through hyperedge HE-3 (induced by source paper "application of flexible numerology to blockage mitigation in 5g mmwave networks"):
  with members:
    - "maximum throughput scheduling for multi connectivity in millimeter wave networks"
    - "resource optimization with flexible numerology and frame structure for heterogeneous services"
    - "improved handover through dual connectivity in 5g mmwave mobile networks"
    - "rapid fading due to human blockage in pedestrian crowds at 5g millimeter wave frequencies"
    - "coverage and rate analysis for millimeter wave cellular networks"

Connected through hyperedge HE-4 (induced by source paper "physical layer performance evaluation of wireless infrared based lifi uplink"):
  with members:
    - "modeling the random orientation of mobile devices measurement analysis and lifi use case"

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)