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: "5g 3gpp like channel models for outdoor urban microcellular and macrocellular environments"
  Abstract: For the development of new 5G systems to operate in bands up to 100 GHz, there is a need for accurate radio propagation models at these bands that currently are not addressed by existing channel models developed for bands below 6 GHz. This document presents a preliminary overview of 5G channel models for bands up to 100 GHz. These have been derived based on extensive measurement and ray tracing results across a multitude of frequencies from 6 GHz to 100 GHz, and this document describes an initial 3D channel model which includes: 1) typical deployment scenarios for urban microcells (UMi) and urban macrocells (UMa), and 2) a baseline model for incorporating path loss, shadow fading, line of sight probability, penetration and blockage models for the typical scenarios. Various processing methodologies such as clustering and antenna decoupling algorithms are also presented.

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 "a millimeter wave channel simulator nyusim with spatial consistency and human blockage"):
  with members:
    - "simulating motion incorporating spatial consistency into the nyusim channel model"
    - "millimeter wave extended nyusim channel model for spatial consistency"
    - "modeling and analyzing millimeter wave cellular systems"
    - "a novel millimeter wave channel simulator and applications for 5g wireless communications"
    - "rapid fading due to human blockage in pedestrian crowds at 5g millimeter wave frequencies"
    - "investigation of prediction accuracy sensitivity and parameter stability of large scale propagation path loss models for 5g wireless communications"

Connected through hyperedge HE-3 (induced by source paper "matching in the air optimal analog beamforming under angular spread"):
  with members:
    - "suburban fixed wireless access channel measurements and models at 28 ghz for 90 outdoor coverage"
    - "path loss beamforming gain and time dynamics measurements at 28 ghz for 90 indoor coverage"
    - "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"

Connected through hyperedge HE-4 (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"
    - "the fluctuating two ray fading model statistical characterization and performance analysis"
    - "mgf approach to the analysis of generalized two ray fading models"

Connected through hyperedge HE-5 (induced by source paper "3d map assisted uav trajectory design under cellular connectivity constraints"):
  with members:
    - "interference management for cellular connected uavs a deep reinforcement learning approach"
    - "radio map based 3d path planning for cellular connected uav"
    - "path design for cellular connected uav with reinforcement learning"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"

Connected through hyperedge HE-6 (induced by source paper "analysis of intelligent vehicular relaying in urban 5g millimeter wave cellular deployments"):
  with members:
    - "5g cellular user equipment from theory to practical hardware design"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "millimeter wave channel modeling and cellular capacity evaluation"

Connected through hyperedge HE-7 (induced by source paper "hybrid beamforming with selection for multiuser massive mimo systems"):
  with members:
    - "stationarity region of mm wave channel based on outdoor microcellular measurements at 28 ghz"
    - "alternating minimization algorithms for hybrid precoding in millimeter wave mimo systems"
    - "an overview of signal processing techniques for millimeter wave mimo systems"
    - "hybrid digital and analog beamforming design for large scale antenna arrays"
    - "massive mimo combining with switches"
    - "hybrid beamforming for massive mimo a survey"
    - "analysis of the local quasi stationarity of measured dual polarized mimo channels"
    - "limited feedback hybrid precoding for multi user millimeter wave systems"

Connected through hyperedge HE-8 (induced by source paper "suburban residential building penetration loss at 28 ghz for fixed wireless access"):
  with members:
    - "path loss beamforming gain and time dynamics measurements at 28 ghz for 90 indoor coverage"
    - "outdoor to indoor penetration loss at 28 ghz for fixed wireless access"
    - "overview of millimeter wave communications for fifth generation 5g wireless networks with a focus on propagation models"

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)