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: "network mimo transmitters with no csi can still be very useful"
  Abstract: In this paper, we consider the Network MIMO channel under the so-called Distributed Channel State Information at the Transmitters (D-CSIT) configuration. In this setting, the precoder is designed in a distributed manner at each Transmitter (TX) on the basis of the locally available multi-user channel estimate. Although the use of simple Zero-Forcing (ZF) was recently shown to reach the optimal DoF for a BC under noisy, yet centralized, CSIT, it can turn very inefficient when faced with D-CSIT: The number of Degrees-of-Freedom (DoF) achieved is then limited by the worst CSI accuracy across TXs. To circumvent this effect, we develop a new robust transmission scheme improving the DoF. A surprising result is uncovered by which, in the regime of so-called weak CSIT, the proposed scheme is shown to be DoF-optimal in that it achieves the so-called centralized outerbound consisting in the DoF of a genie-aided centralized setting in which the CSI versions available at all TXs are gathered. Building upon the insight obtained in the weak CSIT regime, we develop a general D-CSIT robust scheme which improves over the DoF obtained by conventional ZF approach in an arbitrary CSI quality regime and which is shown to achieve the centralized outerbound in some practically relevant D-CSIT configurations.

Connected through hyperedge HE-1 (induced by source paper "robust regularized zf in cooperative broadcast channel under distributed csit"):
  with members:
    - "on the optimal fronthaul compression and decoding strategies for uplink cloud radio access networks"
    - "regularized zf in cooperative broadcast channels under distributed csit a large system analysis"
    - "drone small cells in the clouds design deployment and performance analysis"
    - "linear precoding based on polynomial expansion reducing complexity in massive mimo"
    - "multihop backhaul compression for the uplink of cloud radio access networks"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "completely stale transmitter channel state information is still very useful"
    - "a scalable limited feedback design for network mimo using per cell product codebook"

Connected through hyperedge HE-2 (induced by source paper "degrees of freedom in wireless interference networks with cooperative transmission and backhaul load constraints"):
  with members:
    - "layered downlink precoding for c ran systems with full dimensional mimo"
    - "conferencing in wyner s asymmetric interference network effect of number of rounds"
    - "cloud based topological interference management a case with no cooperative transmission gain"
    - "cell associations that maximize the average uplink downlink degrees of freedom"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "performance of cloud radio networks"
    - "topological interference management with transmitter cooperation"
    - "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"

Connected through hyperedge HE-3 (induced by source paper "on tdma optimality in locally connected networks with no csit"):
  with members:
    - "fractional coloring orthogonal access achieves all unicast capacity dof region of index coding tim if and only if network topology is chordal"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "performance of cloud radio networks"
    - "when does an ensemble of matrices with randomly scaled rows lose rank"
    - "topological interference management with transmitter cooperation"
    - "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"
    - "optimality of orthogonal access for one dimensional convex cellular networks"

Connected through hyperedge HE-4 (induced by source paper "cloud based topological interference management a case with no cooperative transmission gain"):
  with members:
    - "joint optimization of cloud and edge processing for fog radio access networks"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "performance of cloud radio networks"
    - "when does an ensemble of matrices with randomly scaled rows lose rank"
    - "topological interference management with transmitter cooperation"
    - "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"
    - "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)