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: "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit"
  Abstract: The degrees of freedom (DoF) regions are characterized for the multiple-input multiple-output (MIMO) broadcast channel (BC), interference channels (IC) (including X and multi-hop interference channels) and the cognitive radio channel (CRC), when there is perfect and no channel state information at the receivers and the transmitter(s) (CSIR and CSIT), respectively. For the K-user MIMO BC, the exact characterization of the DoF region is obtained, which shows that a simple time-division-based transmission scheme is DoF-region optimal. Using the techniques developed for the MIMO BC, the corresponding problems for the two-user MIMO IC and the CRC are addressed. For both of these channels, inner and outer bounds to the DoF region are obtained and are seen to coincide for a vast majority of the relative numbers of antennas at the four terminals, thereby characterizing DoF regions for all but a few cases. Finally, the DoF regions of the $K$-user MIMO IC, the CRC, and X networks are derived for certain classes of these networks, including the one where all transmitters have an equal number of antennas and so do all receivers. The results of this paper are derived for distributions of fading channel matrices and additive noises that are more general than those considered in other simultaneous related works. The DoF regions with and without CSIT are compared and conditions on the relative numbers of antennas at the terminals under which a lack of CSIT does, or does not, result in the loss of DoF are identified, thereby providing, on the one hand, simple and robust communication schemes that don't require CSIT but have the same DoF performance as their previously found CSIT counterparts, and on the other hand, identifying situations where CSI feedback to transmitters would provide gains that are significant enough that even the DoF performance could be improved.

Connected through hyperedge HE-1 (induced by source paper "k user symmetric m times n mimo interference channel under finite precision csit a gdof perspective"):
  with members:
    - "sum set inequalities from aligned image sets instruments for robust gdof bounds"
    - "aligned image sets and the generalized degrees of freedom of symmetric mimo interference channel with partial csit"
    - "gdof of the k user symmetric miso bc bridging the gap between finite precision and perfect csit"
    - "gdof of the miso bc bridging the gap between finite precision and perfect csit"
    - "generalized degrees of freedom of the symmetric k user interference channel under finite precision csit"
    - "the degrees of freedom of mimo interference channels without state information at transmitters"
    - "generalized degrees of freedom of the symmetric gaussian k user interference channel"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-2 (induced by source paper "aligned image sets and the generalized degrees of freedom of symmetric mimo interference channel with partial csit"):
  with members:
    - "sum set inequalities from aligned image sets instruments for robust gdof bounds"
    - "elevated multiplexing and signal space partitioning in the 2 user mimo ic with partial csit"
    - "gdof of the k user symmetric miso bc bridging the gap between finite precision and perfect csit"
    - "gdof of the miso bc bridging the gap between finite precision and perfect csit"
    - "generalized degrees of freedom of the symmetric k user interference channel under finite precision csit"
    - "multilevel topological interference management"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-3 (induced by source paper "generalized degrees of freedom of the symmetric k user interference channel under finite precision csit"):
  with members:
    - "sum rate maximization for mu miso with partial csit using joint multicasting and broadcasting"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "topological interference management through index coding"
    - "aligned image sets under channel uncertainty settling a conjecture by lapidoth shamai and wigger on the collapse of degrees of freedom under finite precision csit"
    - "degrees of freedom region of miso ofdma broadcast channel with imperfect csit"
    - "on the synergistic benefits of alternating csit for the miso bc"
    - "interference alignment from degrees of freedom to constant gap capacity approximations"
    - "ergodic interference alignment"

Connected through hyperedge HE-4 (induced by source paper "interference and x networks with noisy cooperation and feedback"):
  with members:
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "on x channels with feedback and delayed csi"
    - "the degrees of freedom region of the mimo interference channel with shannon feedback"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"
    - "dependence balance based outer bounds for gaussian networks with cooperation and feedback"
    - "interference channels with destination cooperation"

Connected through hyperedge HE-5 (induced by source paper "on the degrees of freedom of k user siso interference and x channels with delayed csit"):
  with members:
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "completely stale transmitter channel state information is still very useful"
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"
    - "the degrees of freedom of mimo interference channels without state information at transmitters"
    - "on degrees of freedom region of mimo networks without csit"

Connected through hyperedge HE-6 (induced by source paper "the dof region of the multiple antenna time correlated interference channel with delayed csit"):
  with members:
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "on the degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "completely stale transmitter channel state information is still very useful"
    - "the degrees of freedom of mimo interference channels without state information at transmitters"
    - "interference alignment under limited feedback for mimo interference channels"
    - "on degrees of freedom region of mimo networks without csit"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"

Connected through hyperedge HE-7 (induced by source paper "elements of cellular blind interference alignment aligned frequency reuse wireless index coding and interference diversity"):
  with members:
    - "index coding an interference alignment perspective"
    - "lexicographic products and the power of non linear network coding"
    - "completely stale transmitter channel state information is still very useful"
    - "index coding via linear programming"
    - "isotropic mimo interference channels without csit the loss of degrees of freedom"
    - "on the index coding problem and its relation to network coding and matroid theory"
    - "on the capacity of fading mimo broadcast channels with imperfect transmitter side information"

Connected through hyperedge HE-8 (induced by source paper "airsync enabling distributed multiuser mimo with full spatial multiplexing"):
  with members:
    - "experiment driven characterization of full duplex wireless systems"
    - "channel estimation and linear precoding in multiuser multiple antenna tdd systems"
    - "multiuser mimo achievable rates with downlink training and channel state feedback"
    - "on the capacity of fading mimo broadcast channels with imperfect transmitter side information"

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)