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: "diversity analysis of bit interleaved coded multiple beamforming"
  Abstract: In this paper, diversity analysis of bit-interleaved coded multiple beamforming (BICMB) is extended to the case of general spatial interleavers, removing a condition on their previously known design criteria and quantifying the resulting diversity order. The diversity order is determined by a parameter Qmax which is inherited from the convolutional code and the spatial de-multiplexer used in BICMB. We introduce a method to find this parameter by employing a transfer function approach as in finding the weight spectrum of a convolutional code. By using this method, several Qmax values are shown and verified to be identical with the results from a computer search. The diversity analysis and the method to find the parameter are supported by simulation results. By using the Singleton bound, we also show that Qmax is lower bounded by the product of the number of streams and the code rate of an encoder. The design rule of the spatial de-multiplexer for a given convolutional code is proposed to meet the condition on the maximum achievable diversity order.

Connected through hyperedge HE-1 (induced by source paper "full diversity precoding design of bit interleaved coded multiple beamforming with orthogonal frequency division multiplexing"):
  with members:
    - "diversity analysis 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"
    - "reduced complexity sphere decoding for square qam via a new lattice representation"

Connected through hyperedge HE-2 (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"
    - "mimo networks the effects of interference"
    - "constellation precoded beamforming"
    - "constellation precoded multiple beamforming"
    - "bit interleaved coded multiple beamforming with constellation precoding"

Connected through hyperedge HE-3 (induced by source paper "bit interleaved coded multiple beamforming with perfect coding"):
  with members:
    - "precoding by pairing subchannels to increase mimo capacity with discrete input alphabets"
    - "reduced complexity decoding for bit interleaved coded multiple beamforming with constellation precoding"
    - "golden coded multiple beamforming"
    - "constellation precoded beamforming"
    - "constellation precoded multiple beamforming"
    - "mimo precoding with x and y codes"
    - "reduced complexity sphere decoding"
    - "bit interleaved coded multiple beamforming with constellation precoding"

Connected through hyperedge HE-4 (induced by source paper "multiple beamforming with perfect coding"):
  with members:
    - "reduced complexity decoding for bit interleaved coded multiple beamforming with constellation precoding"
    - "constellation precoded beamforming"
    - "constellation precoded multiple beamforming"
    - "reduced complexity sphere decoding"
    - "bit interleaved coded multiple beamforming with constellation precoding"
    - "fast maximum likelihood decoding of the golden code"
    - "reduced complexity sphere decoding for square qam via a new lattice representation"
    - "perfect space time codes with minimum and non minimum delay for any number of antennas"

Connected through hyperedge HE-5 (induced by source paper "an upper bound to the marginal pdf of the ordered eigenvalues of wishart matrices"):
  with members:
    - "constellation precoded beamforming"
    - "bit interleaved coded multiple beamforming with constellation precoding"

Connected through hyperedge HE-6 (induced by source paper "reduced complexity decoding for bit interleaved coded multiple beamforming with constellation precoding"):
  with members:
    - "reduced complexity sphere decoding"
    - "bit interleaved coded multiple beamforming with constellation precoding"
    - "reduced complexity sphere decoding for square qam via a new lattice representation"

Connected through hyperedge HE-7 (induced by source paper "constellation precoded multiple beamforming"):
  with members:
    - "augmented lattice reduction for mimo decoding"
    - "constellation precoded beamforming"
    - "reduced complexity sphere decoding for square qam via a new lattice representation"
    - "a near maximum likelihood decoding algorithm for mimo systems based on semi definite programming"

Connected through hyperedge HE-8 (induced by source paper "bit interleaved coded multiple beamforming with constellation precoding"):
  with members:
    - "constellation precoded 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)