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: "performance analysis of project and forward relaying in mixed mimo pinhole and rayleigh dual hop channel"
  Abstract: In this letter, we present an end-to-end performance analysis of dual-hop project-and-forward relaying in a realistic scenario, where the source-relay and the relay-destination links are experiencing MIMO-pinhole and Rayleigh channel conditions, respectively. We derive the probability density function of both the relay postprocessing and the end-to-end signal-to-noise ratios, and the obtained expressions are used to derive the outage probability of the analyzed system as well as its end-to-end ergodic capacity in terms of generalized functions. Applying then the residue theory to Mellin–Barnes integrals, we infer the system asymptotic behavior for different channel parameters. As the bivariate Meijer-G function is involved in the analysis, we propose a new and fast MATLAB implementation enabling an automated definition of the complex integration contour. Extensive Monte-Carlo simulations are invoked to corroborate the analytical results.

Connected through hyperedge HE-1 (induced by source paper "fundamental limits of spectrum sharing for noma based cooperative relaying under a peak interference constraint"):
  with members:
    - "cognitive non orthogonal multiple access with cooperative relaying a new wireless frontier for 5g spectrum sharing"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "on the performance of noma based cooperative relaying systems over rician fading channels"
    - "nonorthogonal multiple access in large scale underlay cognitive radio networks"
    - "relay selection for cooperative noma"
    - "lattice partition multiple access a new method of downlink non orthogonal multiuser transmissions"
    - "impact of pointing errors on the performance of mixed rf fso dual hop transmission systems"
    - "a new formula for the ber of binary modulations with dual branch selection over generalized k"

Connected through hyperedge HE-2 (induced by source paper "on physical layer security over fox s h function wiretap fading channels"):
  with members:
    - "rician k factor based analysis of xlos service probability in 5g outdoor ultra dense networks"
    - "secrecy capacity analysis over kappa mu fading channels theory and applications"
    - "a novel unified expression for the capacity and bit error probability of wireless communication systems over generalized fading channels"

Connected through hyperedge HE-3 (induced by source paper "cognitive mimo rf fso cooperative relay communication with mobile nodes and imperfect channel state information"):
  with members:
    - "impact of pointing errors on the performance of mixed rf fso dual hop transmission systems"
    - "the effects of limited channel knowledge on cognitive radio system capacity"
    - "a new formula for the ber of binary modulations with dual branch selection over generalized k"

Connected through hyperedge HE-4 (induced by source paper "on multihop weibull fading communications performance analysis framework and applications"):
  with members:
    - "modeling and analyzing millimeter wave cellular systems"
    - "max min fair millimetre wave backhauling"
    - "a survey of millimeter wave mmwave communications for 5g opportunities and challenges"
    - "consumption factor optimization for multihop relaying over nakagami m fading channels"
    - "millimeter wave channel modeling and cellular capacity evaluation"

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)