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 networks the effects of interference"
  Abstract: Multiple-input multiple-output (MIMO) systems are being considered as one of the key enabling technologies for future wireless networks. However, the decrease in capacity due to the presence of interferers in MIMO networks is not well understood. In this paper, we develop an analytical framework to characterize the capacity of MIMO communication systems in the presence of multiple MIMO co-channel interferers and noise. We consider the situation in which transmitters have no channel state information, and all links undergo Rayleigh fading. We first generalize the determinant representation of hypergeometric functions with matrix arguments to the case when the argument matrices have eigenvalues of arbitrary multiplicity. This enables the derivation of the distribution of the eigenvalues of Gaussian quadratic forms and Wishart matrices with arbitrary correlation, with application to both single-user and multiuser MIMO systems. In particular, we derive the ergodic mutual information for MIMO systems in the presence of multiple MIMO interferers. Our analysis is valid for any number of interferers, each with arbitrary number of antennas having possibly unequal power levels. This framework, therefore, accommodates the study of distributed MIMO systems and accounts for different spatial positions of the MIMO interferers.

Connected through hyperedge HE-1 (induced by source paper "how much bandpass filtering is required in massive mimo base stations"):
  with members:
    - "massive mimo ten myths and one critical question"
    - "uplink performance of time reversal mrc in massive mimo systems subject to phase noise"
    - "massive mimo with non ideal arbitrary arrays hardware scaling laws and circuit aware design"
    - "what will 5g be"
    - "five disruptive technology directions for 5g"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "energy and spectral efficiency of very large multiuser mimo systems"

Connected through hyperedge HE-2 (induced by source paper "artificial noise revisited"):
  with members:
    - "semantically secure lattice codes for the gaussian wiretap channel"
    - "enhancing secrecy with multi antenna transmission in wireless ad hoc networks"
    - "practical secrecy using artificial noise"
    - "achieving the secrecy capacity of wiretap channels using polar codes"
    - "lattice codes for the gaussian wiretap channel"
    - "secure transmission with artificial noise over fading channels achievable rate and optimal power allocation"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "the secrecy capacity of the mimo wiretap channel"

Connected through hyperedge HE-3 (induced by source paper "ergodic capacity comparison of different relay precoding schemes in dual hop af systems with co channel interference"):
  with members:
    - "outage probability of dual hop multiple antenna af systems with linear processing in the presence of co channel interference"
    - "outage probability of dual hop multiple antenna af relaying systems with interference"
    - "a new formula for the ber of binary modulations with dual branch selection over generalized k"
    - "ergodic capacity analysis of amplify and forward mimo dual hop systems"

Connected through hyperedge HE-4 (induced by source paper "on some unifications arising from the mimo rician shadowed model"):
  with members:
    - "the kappa mu shadowed fading model unifying the kappa mu and eta mu distributions"
    - "statistical characterization of kappa mu shadowed fading"
    - "random matrix model for nakagami hoyt fading"
    - "mimo multichannel beamforming ser and outage using new eigenvalue distributions of complex noncentral wishart matrices"

Connected through hyperedge HE-5 (induced by source paper "distribution of the largest eigenvalue for real wishart and gaussian random matrices and a simple approximation for the tracy widom distribution"):
  with members:
    - "condition numbers of gaussian random matrices"
    - "performance analysis of mimo mrc in double correlated rayleigh environments"

Connected through hyperedge HE-6 (induced by source paper "schur complement based analysis of mimo zero forcing for rician fading"):
  with members:
    - "exact mimo zero forcing detection analysis for transmit correlated rician fading"

Connected through hyperedge HE-7 (induced by source paper "large system analysis of correlated mimo multiple access channels with arbitrary signaling in the presence of interference"):
  with members:
    - "massive mimo for next generation wireless systems"
    - "blind pilot decontamination"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "on capacity of large scale mimo multiple access channels with distributed sets of correlated antennas"
    - "achieving massive mimo spectral efficiency with a not so large number of antennas"
    - "a deterministic equivalent for the analysis of correlated mimo multiple access channels"
    - "hessian and concavity of mutual information differential entropy and entropy power in linear vector gaussian channels"
    - "vector precoding for wireless mimo systems and its replica analysis"

Connected through hyperedge HE-8 (induced by source paper "diversity analysis of bit interleaved coded multiple beamforming with orthogonal frequency division multiplexing"):
  with members:
    - "full diversity precoding design of bit interleaved coded multiple beamforming with orthogonal frequency division multiplexing"
    - "multiple beamforming with perfect coding"
    - "bit interleaved coded multiple beamforming with perfect coding"
    - "constellation precoded beamforming"
    - "constellation precoded multiple beamforming"
    - "bit interleaved coded multiple beamforming with constellation precoding"
    - "diversity analysis of bit interleaved coded multiple beamforming"

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)