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 multichannel beamforming ser and outage using new eigenvalue distributions of complex noncentral wishart matrices"
  Abstract: This paper analyzes MIMO systems with multichannel beamforming in Ricean fading. Our results apply to a wide class of multichannel systems which transmit on the eigenmodes of the MIMO channel. We first present new closed-form expressions for the marginal ordered eigenvalue distributions of complex noncentral Wishart matrices. These are used to characterize the statistics of the signal to noise ratio (SNR) on each eigenmode. Based on this, we present exact symbol error rate (SER) expressions. We also derive closed-form expressions for the diversity order, array gain, and outage probability. We show that the global SER performance is dominated by the subchannel corresponding to the minimum channel singular value. We also show that, at low outage levels, the outage probability varies inversely with the Ricean K-factor for cases where transmission is only on the most dominant subchannel (i.e. a singlechannel beamforming system). Numerical results are presented to validate the theoretical analysis.

Connected through hyperedge HE-1 (induced by source paper "on the exact and approximate eigenvalue distribution for sum of wishart matrices"):
  with members:
    - "new results on the sum of gamma random variates with application to the performance of wireless communication systems over nakagami m fading channels"
    - "capacity and character expansions moment generating function and other exact results for mimo correlated channels"

Connected through hyperedge HE-2 (induced by source paper "eigenvalue dynamics of a central wishart matrix with application to mimo systems"):
  with members:
    - "distribution of the largest eigenvalue for real wishart and gaussian random matrices and a simple approximation for the tracy widom distribution"
    - "massive mimo for next generation wireless systems"
    - "on the bivariate nakagami m cumulative distribution function closed form expression and applications"
    - "on the distribution of mimo mutual information an in depth painleve based characterization"
    - "on the mutual information distribution of ofdm based spatial multiplexing exact variance and outage approximation"

Connected through hyperedge HE-3 (induced by source paper "codebook based opportunistic interference alignment"):
  with members:
    - "on the achievable dof and user scaling law of opportunistic interference alignment in 3 transmitter mimo interference channels"
    - "opportunistic interference alignment for mimo interfering multiple access channels"
    - "multi cell random beamforming achievable rate and degrees of freedom region"
    - "opportunistic interference mitigation achieves optimal degrees of freedom in wireless multi cell uplink networks"
    - "channel estimation and linear precoding in multiuser multiple antenna tdd systems"
    - "interference alignment under limited feedback for mimo interference channels"
    - "interference alignment with limited feedback"
    - "pilot contamination and precoding in multi cell tdd 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"
    - "mimo networks the effects of interference"
    - "random matrix model for nakagami hoyt fading"

Connected through hyperedge HE-5 (induced by source paper "large system analysis of linear precoding in miso broadcast channels with confidential messages"):
  with members:
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "secrecy sum rates with regularized channel inversion precoding under imperfect csi at the transmitter"
    - "linear precoding for broadcast channels with confidential messages under transmit side channel correlation"
    - "secrecy sum rates for multi user mimo regularized channel inversion precoding"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "rethinking the secrecy outage formulation a secure transmission design perspective"
    - "robust beamforming for security in mimo wiretap channels with imperfect csi"
    - "secure transmission with artificial noise over fading channels achievable rate and optimal power allocation"

Connected through hyperedge HE-6 (induced by source paper "opportunistic interference alignment for mimo interfering multiple access channels"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "opportunistic interference mitigation achieves optimal degrees of freedom in wireless multi cell uplink networks"
    - "on the spatial degrees of freedom of multicell and multiuser mimo channels"
    - "on feasibility of interference alignment in mimo interference networks"
    - "interference alignment under limited feedback for mimo interference channels"
    - "on feasibility of interference alignment in mimo interference networks"
    - "ergodic interference alignment"
    - "degrees of freedom of the k user m times n mimo interference channel"

Connected through hyperedge HE-7 (induced by source paper "mimo networks the effects of interference"):
  with members:
    - "on the capacity of doubly correlated mimo channels"
    - "mimo diversity in the presence of double scattering"

Connected through hyperedge HE-8 (induced by source paper "on the monotonicity log concavity and tight bounds of the generalized marcum and nuttall q functions"):
  with members:
    - "on the monotonicity of the generalized marcum and nuttall q functions"

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)