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: "low snr capacity of fading channels mimo and delay spread"
  Abstract: Discrete-time Rayleigh fading multiple-input multiple-output (MIMO) channels are considered, with no channel state information at the transmitter and receiver. The fading is assumed to be correlated in time and independent from antenna to antenna. Peak and average transmit power constraints are imposed, either on the sum over antennas, or on each individual antenna. In both cases, an upper bound and an asymptotic lower bound, as the signal-to-noise ratio approaches zero, on the channel capacity are presented. The limit of normalized capacity is identified under the sum power constraints, and, for a subclass of channels, for individual power constraints. These results carry over to a SISO channel with delay spread (i.e. frequency selective fading).

Connected through hyperedge HE-1 (induced by source paper "low snr capacity of noncoherent fading channels"):
  with members:
    - "multipath channels of bounded capacity"
    - "a channel that heats up"
    - "optimal constellations for the low snr noncoherent mimo block rayleigh fading channel"
    - "on the low snr capacity of peak limited non coherent fading channels with memory"
    - "low snr capacity of fading channels with peak and average power constraints"
    - "how good is phase shift keying for peak limited rayleigh fading channels in the low snr regime"
    - "capacity per unit energy of fading channels with a peak constraint"

Connected through hyperedge HE-2 (induced by source paper "multipath channels of bounded capacity"):
  with members:
    - "gaussian fading is the worst fading"
    - "on multipath fading channels at high snr"
    - "a hot channel"
    - "a coding theorem for a class of stationary channels with feedback"

Connected through hyperedge HE-3 (induced by source paper "optimal constellations for the low snr noncoherent mimo block rayleigh fading channel"):
  with members:
    - "non coherent capacity and reliability of sparse multipath channels in the wideband regime"
    - "capacity of sparse multipath channels in the ultra wideband regime"
    - "low snr capacity of fading channels with peak and average power constraints"
    - "the noncoherent rician fading channel part i structure of the capacity achieving input"
    - "noncoherent rician fading channel part ii spectral efficiency in the low power regime"
    - "capacity per unit energy of fading channels with a peak constraint"

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)