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 mimo mrc in double correlated rayleigh environments"
  Abstract: We consider multiple-input multiple-output (MIMO) transmit beamforming systems with maximum ratio combining (MRC) receivers. The operating environment is Rayleigh fading with both transmit and receive spatial correlation. We present exact expressions for the probability density function (pdf) of the output signal-to-noise ratio, as well as the system outage probability. The results are based on explicit closed-form expressions which we derive for the pdf and cumulative distribution function of the maximum eigenvalue of double-correlated complex Wishart matrices. For systems with two antennas at either the transmitter or the receiver, we also derive exact closed-form expressions for the symbol-error rate. The new expressions are used to prove that MIMO-MRC achieves the maximum available spatial diversity order, and to demonstrate the effect of spatial correlation. The analysis is validated through comparison with Monte Carlo simulations

Connected through hyperedge HE-1 (induced by source paper "performance of two way relaying over α μ fading channels in hybrid rf fso wireless networks"):
  with members:
    - "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"
    - "on the distribution of the sum of gamma gamma variates and applications in rf and optical wireless communications"

Connected through hyperedge HE-2 (induced by source paper "exact statistical characterization of 2 times2 gram matrices with arbitrary variance profile"):
  with members:
    - "asymptotic performance of linear receivers in mimo fading channels"
    - "on the capacity of doubly correlated mimo channels"

Connected through hyperedge HE-3 (induced by source paper "a new asymptotic analysis technique for diversity receptions over correlated lognormal fading channels"):
  with members:
    - "on the monotonicity log concavity and tight bounds of the generalized marcum and nuttall q functions"

Connected through hyperedge HE-4 (induced by source paper "on the joint impact of hardware impairments and imperfect csi on successive decoding"):
  with members:
    - "outage probability of dual hop multiple antenna af systems with linear processing in the presence of co channel interference"
    - "on the mimo capacity with residual transceiver hardware impairments"
    - "performance analysis of the ordered v blast approach over nakagami m fading channels"
    - "exact joint distribution analysis of zero forcing v blast gains with greedy ordering"
    - "diversity of mmse mimo receivers"
    - "mimo transmission with residual transmit rf impairments"

Connected through hyperedge HE-5 (induced by source paper "artificial noise aided transmission in multi antenna relay wiretap channels with spatially random eavesdroppers"):
  with members:
    - "artificial noise aided secure transmission in large scale spectrum sharing networks"
    - "large scale mimo relaying techniques for physical layer security af or df"
    - "multi antenna relay aided wireless physical layer security"
    - "secure transmission for relay wiretap channels in the presence of spatially random eavesdroppers"
    - "physical layer security in downlink multi antenna cellular networks"
    - "optimal relay selection for physical layer security in cooperative wireless networks"
    - "physical layer security in cellular networks a stochastic geometry approach"
    - "on the design of artificial noise aided secure multi antenna transmission in slow fading channels"

Connected through hyperedge HE-6 (induced by source paper "green cognitive relaying opportunistically switching between data transmission and energy harvesting"):
  with members:
    - "a random access protocol for pilot allocation in crowded massive mimo systems"
    - "achieving autonomous compressive spectrum sensing for cognitive radios"
    - "wireless information and power transfer in relay systems with multiple antennas and interference"
    - "error rate analysis of cognitive radio transmissions with imperfect channel sensing"
    - "opportunistic wireless energy harvesting in cognitive radio networks"
    - "green power control in cognitive wireless networks"
    - "cognitive energy harvesting and transmission from a network perspective"
    - "energy efficient delay constrained transmission and sensing for cognitive radio systems"

Connected through hyperedge HE-7 (induced by source paper "impact of secondary user communication on security communication of primary user"):
  with members:
    - "the effects of limited channel knowledge on cognitive radio system capacity"
    - "interference assisted secret communication"
    - "secure transmission with artificial noise over fading channels achievable rate and optimal power allocation"
    - "on peak versus average interference power constraints for protecting primary users in cognitive radio networks"

Connected through hyperedge HE-8 (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:
    - "mimo networks the effects of interference"
    - "condition numbers of gaussian random matrices"

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)