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 of optimum combining in a poisson field of interferers and rayleigh fading channels"
  Abstract: This paper studies the performance of antenna array processing in distributed multiple access networks without power control. The positions of nodes are determined by a Poisson point process. Desired and interfering signals are subject to both path-loss (with an exponent greater than 2) and to independent Rayleigh fading. Using these assumptions, we derive the exact closed form expression for the cumulative distribution function of the output signal-to-interference-plus-noise ratio when optimum combining is applied. This results in a pertinent measure of the network performance in terms of the outage probability, which in turn provides insights into the network capacity gain that could be achieved with antenna array processing. We present and discuss examples of applications, as well as some numerical results.

Connected through hyperedge HE-1 (induced by source paper "wireless powered asynchronous backscatter networks with sporadic short packets performance analysis and optimization"):
  with members:
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "physical layer security in mimo backscatter wireless systems"
    - "full duplex backscatter interference networks based on time hopping spread spectrum"
    - "some new research trends in wirelessly powered communications"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"
    - "wireless powered communication opportunities and challenges"

Connected through hyperedge HE-2 (induced by source paper "uplink performance of multi antenna cellular networks with co operative base stations and user centric clustering"):
  with members:
    - "ergodic spectral efficiency in mimo cellular networks"
    - "on a user centric base station cooperation scheme for reliable communications"
    - "full duplex cloud ran with uplink downlink remote radio head association"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "cooperative base station coloring for pair wise multi cell coordination"
    - "the world s first real time testbed for massive mimo design implementation and validation"
    - "uplink and downlink rate analysis of a full duplex c ran with radio remote head association"
    - "distributed massive mimo in cellular networks impact of imperfect hardware and number of oscillators"

Connected through hyperedge HE-3 (induced by source paper "full duplex mimo small cell networks with interference cancellation"):
  with members:
    - "self interference in full duplex multi user mimo channels"
    - "joint backhaul access analysis of full duplex self backhauling heterogeneous networks"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "analysis of massive mimo enabled downlink wireless backhauling for full duplex small cells"
    - "optimal low complexity self interference cancellation for full duplex mimo small cells"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "performance analysis of partial interference cancellation in multi antenna udns"
    - "massive mimo enabled full duplex cellular networks"

Connected through hyperedge HE-4 (induced by source paper "maximal ratio transmission in wireless poisson networks under spatially correlated fading channels"):
  with members:
    - "effect of spatial interference correlation on the performance of maximum ratio combining"
    - "fundamental limits of cooperation"
    - "diversity loss due to interference correlation"
    - "open loop spatial multiplexing and diversity communications in ad hoc networks"
    - "a tractable approach to coverage and rate in cellular networks"
    - "transmission capacity of ad hoc networks with spatial diversity"

Connected through hyperedge HE-5 (induced by source paper "effect of spatial interference correlation on the performance of maximum ratio combining"):
  with members:
    - "cooperative relaying under spatially and temporally correlated interference"
    - "cooperative relaying in a poisson field of interferers a diversity order analysis"
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "diversity polynomials for the analysis of temporal correlations in wireless networks"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"
    - "transmission capacity of wireless networks"
    - "diversity loss due to interference correlation"
    - "cooperative strategies for interference limited wireless networks"

Connected through hyperedge HE-6 (induced by source paper "dual branch mrc receivers under spatial interference correlation and nakagami fading"):
  with members:
    - "cooperative relaying under spatially and temporally correlated interference"
    - "a tractable model for noncoherent joint transmission base station cooperation"
    - "effect of spatial interference correlation on the performance of maximum ratio combining"
    - "cooperative relaying in a poisson field of interferers a diversity order analysis"
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "diversity polynomials for the analysis of temporal correlations in wireless networks"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"
    - "diversity loss due to interference correlation"

Connected through hyperedge HE-7 (induced by source paper "performance of multiantenna linear mmse receivers in doubly stochastic networks"):
  with members:
    - "performance of multi antenna mmse receivers in non homogenous poisson networks"
    - "interference and throughput in aloha based ad hoc networks with isotropic node distribution"
    - "high sir transmission capacity of wireless networks with general fading and node distribution"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "open loop spatial multiplexing and diversity communications in ad hoc networks"
    - "on the spectral efficiency of links with multi antenna receivers in non homogenous wireless networks"
    - "outage probability of general ad hoc networks in the high reliability regime"
    - "performance of interference alignment in clustered wireless ad hoc networks"

Connected through hyperedge HE-8 (induced by source paper "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"):
  with members:
    - "interference coordination random clustering and adaptive limited feedback"
    - "modeling analysis and design for carrier aggregation in heterogeneous cellular networks"
    - "quality of service in wireless cellular networks subject to log normal shadowing"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "analytical modeling of uplink cellular networks"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling heterogeneous network interference using poisson point processes"

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)