human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit"):
  Abstract: The degrees of freedom (DoF) region of the fast-fading MIMO (multiple-input multiple-output) Gaussian broadcast channel (BC) is studied when there is delayed channel state information at the transmitter (CSIT). In this setting, the channel matrices are assumed to vary independently across time and the transmitter is assumed to know the channel matrices with some arbitrary finite delay. An outerbound to the DoF region of the general K-user MIMO BC (with an arbitrary number of antennas at each terminal) is derived. This outer-bound is then shown to be tight for two classes of MIMO BCs, namely, (a) the two-user MIMO BC with arbitrary number of antennas at all terminals, and (b) for certain three-user MIMO BCs where all three receivers have an equal number of antennas and the transmitter has no more than twice the number of antennas present at each receivers. The achievability results are obtained by developing an interference alignment scheme that optimally accounts for multiple, and possibly distinct, number of antennas at the receivers.

Includes members:
  Member "the degrees of freedom region of the mimo interference channel with shannon feedback":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "on the degrees of freedom of mimo x networks with non cooperation transmitters")
  Member "interference alignment for the mimo interference channel with delayed local csit":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "achievable sum dof of the k user mimo interference channel with delayed csit")
  Member "completely stale transmitter channel state information is still very useful":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "achievable dof regions of three user mimo broadcast channel with delayed csit")
  Member "retrospective interference alignment":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "throughput region of spatially correlated interference packet networks")
  Member "aiming perfectly in the dark blind interference alignment through staggered antenna switching":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "linear degrees of freedom of mimo broadcast channels with reconfigurable antennas in the absence of csit")
  Member "exploiting channel correlations simple interference alignment schemes with no csit":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "achievable dof delay trade offs for the k user mimo interference channel with delayed csit")
  Member "on degrees of freedom region of mimo networks without csit":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "the degrees of freedom region of temporally correlated mimo networks with delayed csit")
  Member "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "k user symmetric m times n mimo interference channel under finite precision csit a gdof perspective")

Question: Please tell me which class the source paper 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)