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: "mimo channel modeling and capacity analysis for 5g millimeter wave wireless systems"
  Abstract: This paper presents a 3-D statistical channel model of the impulse response with small-scale spatially correlated random coefficients for multi-element transmitter and receiver antenna arrays, derived using the physically-based time cluster - spatial lobe (TCSL) clustering scheme. The small-scale properties of multipath amplitudes are modeled based on 28 GHz outdoor millimeter-wave small-scale local area channel measurements. The wideband channel capacity is evaluated by considering measurement-based Rician-distributed voltage amplitudes, and the spatial autocorrelation of multipath amplitudes for each pair of transmitter and receiver antenna elements. Results indicate that Rician channels may exhibit equal or possibly greater capacity compared to Rayleigh channels, depending on the number of antennas.

Connected through hyperedge HE-1 (induced by source paper "fast harq over finite blocklength codes a technique for low latency reliable communication"):
  with members:
    - "modelling decoding errors in harq"
    - "green communication via power optimized harq protocols"
    - "green communication via type i arq finite block length analysis"
    - "finite block length analysis of the incremental redundancy harq"
    - "a tight upper bound for the third order asymptotics for most discrete memoryless channels"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "on the benefits of partial channel state information for repetition protocols in block fading channels"
    - "performance of hybrid arq in block fading channels a fixed outage probability analysis"

Connected through hyperedge HE-2 (induced by source paper "the effect of spatial correlation on the performance of uplink and downlink single carrier massive mimo systems"):
  with members:
    - "average sep optimal precoding for correlated massive mimo with zf detection an asymptotic analysis"
    - "uplink massive mimo for channels with spatial correlation"
    - "waveforms for the massive mimo downlink amplifier efficiency distortion and performance"
    - "pilot reuse for massive mimo transmission over spatially correlated rayleigh fading channels"
    - "massive mimo for next generation wireless systems"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "diversity of mimo linear precoding"

Connected through hyperedge HE-3 (induced by source paper "shadowed fso mmwave systems with interference"):
  with members:
    - "performance of a free space optical relay assisted hybrid rf fso system in generalized m distributed channels"
    - "5g ultra dense cellular networks"
    - "on the ergodic capacity of underlay cognitive dual hop af relayed systems under non identical generalized k fading channels"
    - "unified performance analysis of mixed radio frequency free space optical dual hop transmission systems"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "on the capacity of free space optical intensity channels"

Connected through hyperedge HE-4 (induced by source paper "simulating motion incorporating spatial consistency into the nyusim channel model"):
  with members:
    - "millimeter wave v2v communications distributed association and beam alignment"
    - "a novel millimeter wave channel simulator and applications for 5g wireless communications"
    - "small scale local area and transitional millimeter wave propagation for 5g communications"
    - "3 d statistical channel model for millimeter wave outdoor mobile broadband communications"

Connected through hyperedge HE-5 (induced by source paper "lattice coding for rician fading channels from hadamard rotations"):
  with members:
    - "locally diverse constellations from the special orthogonal group"

Connected through hyperedge HE-6 (induced by source paper "mobile millimeter wave channel acquisition tracking and abrupt change detection"):
  with members:
    - "28 ghz millimeter wave ultrawideband small scale fading models in wireless channels"
    - "tracking angles of departure and arrival in a mobile millimeter wave channel"
    - "channel estimation and hybrid precoding for millimeter wave cellular systems"
    - "what will 5g be"
    - "spatially sparse precoding in millimeter wave mimo systems"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "five disruptive technology directions for 5g"
    - "millimeter wave beamforming for wireless backhaul and access in small cell networks"

Connected through hyperedge HE-7 (induced by source paper "on clustered statistical mimo millimeter wave channel simulation"):
  with members:
    - "5g 3gpp like channel models for outdoor urban microcellular and macrocellular environments"
    - "frequency selective hybrid precoding for limited feedback millimeter wave systems"
    - "statistical channel model with multi frequency and arbitrary antenna beamwidth for millimeter wave outdoor communications"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"
    - "what will 5g be"
    - "spatially sparse precoding in millimeter wave mimo systems"
    - "millimeter wave channel modeling and cellular capacity evaluation"

Connected through hyperedge HE-8 (induced by source paper "28 ghz millimeter wave ultrawideband small scale fading models in wireless channels"):
  with members:
    - "statistical channel model with multi frequency and arbitrary antenna beamwidth for millimeter wave outdoor communications"
    - "3 d statistical channel model for millimeter wave outdoor mobile broadband communications"

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)