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: "the fluctuating two ray fading model statistical characterization and performance analysis"
  Abstract: We introduce the Fluctuating Two-Ray (FTR) fading model, a new statistical channel model that consists of two fluctuating specular components with random phases plus a diffuse component. The FTR model arises as the natural generalization of the two-wave with diffuse power (TWDP) fading model; this generalization allows its two specular components to exhibit a random amplitude fluctuation. Unlike the TWDP model, all the chief probability functions of the FTR fading model (PDF, CDF and MGF) are expressed in closed-form, having a functional form similar to other state-of-the-art fading models. We also provide approximate closed-form expressions for the PDF and CDF in terms of a finite number of elementary functions, which allow for a simple evaluation of these statistics to an arbitrary level of precision. We show that the FTR fading model provides a much better fit than Rician fading for recent small-scale fading measurements in 28 GHz outdoor millimeter-wave channels. Finally, the performance of wireless communication systems over FTR fading is evaluated in terms of the bit error rate and the outage capacity, and the interplay between the FTR fading model parameters and the system performance is discussed. Monte Carlo simulations have been carried out in order to validate the obtained theoretical expressions.

Connected through hyperedge HE-1 (induced by source paper "suburban fixed wireless access channel measurements and models at 28 ghz for 90 outdoor coverage"):
  with members:
    - "suburban residential building penetration loss at 28 ghz for fixed wireless access"
    - "path loss beamforming gain and time dynamics measurements at 28 ghz for 90 indoor coverage"
    - "28 ghz microcell measurement campaign for residential environment"
    - "how much spectrum is too much in millimeter wave wireless access"
    - "small scale local area and transitional millimeter wave propagation for 5g communications"
    - "overview of millimeter wave communications for fifth generation 5g wireless networks with a focus on propagation models"
    - "gbps user rates using mmwave relayed backhaul with high gain antennas"
    - "stationarity region of mm wave channel based on outdoor microcellular measurements at 28 ghz"

Connected through hyperedge HE-2 (induced by source paper "composite fading models based on inverse gamma shadowing theory and validation"):
  with members:
    - "on the utility of the inverse gamma distribution in modeling composite fading channels"
    - "an extension of the kappa mu shadowed fading model statistical characterization and applications"
    - "the kappa mu shadowed fading model with integer fading parameters"
    - "mgf approach to the analysis of generalized two ray fading models"

Connected through hyperedge HE-3 (induced by source paper "stochastic fading channel models with multiple dominant specular components for 5g and beyond"):
  with members:
    - "intelligent reflecting surface enhanced wireless network via joint active and passive beamforming"
    - "a generalized fading model with multiple specular components"
    - "intelligent reflecting surface enhanced wireless network joint active and passive beamforming design"
    - "5g 3gpp like channel models for outdoor urban microcellular and macrocellular environments"
    - "mgf approach to the analysis of generalized two ray fading models"

Connected through hyperedge HE-4 (induced by source paper "unveiling the hyper rayleigh regime of the fluctuating two ray fading model"):
  with members:
    - "physical layer security over fluctuating two ray fading channels"
    - "new results on the fluctuating two ray model with arbitrary fading parameters and its applications"
    - "mgf approach to the analysis of generalized two ray fading models"
    - "a new framework for the performance analysis of wireless communications under hoyt nakagami q fading"

Connected through hyperedge HE-5 (induced by source paper "on the beneficial role of a finite number of scatterers for wireless physical layer security"):
  with members:
    - "secrecy rate maximization for intelligent reflecting surface assisted multi antenna communications"
    - "physical layer security over fluctuating two ray fading channels"
    - "rethinking the secrecy outage formulation a secure transmission design perspective"

Connected through hyperedge HE-6 (induced by source paper "the alpha kappa mu shadowed fading distribution statistical characterization and applications"):
  with members:
    - "the kappa mu shadowed fading model with integer fading parameters"

Connected through hyperedge HE-7 (induced by source paper "performance analysis of millimeter wave relaying impacts of beamwidth and self interference"):
  with members:
    - "performance analysis of outdoor mmwave ad hoc networks"
    - "millimeter wave cellular networks a mac layer perspective"
    - "on the joint impact of beamwidth and orientation error on throughput in directional wireless poisson networks"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"

Connected through hyperedge HE-8 (induced by source paper "new results on the fluctuating two ray model with arbitrary fading parameters and its applications"):
  with members:
    - "28 ghz millimeter wave ultrawideband small scale fading models in wireless channels"
    - "mgf approach to the analysis of generalized two ray fading models"
    - "five disruptive technology directions for 5g"

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)