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: "performance of cloud radio networks"
  Abstract: Cloud radio networks coordinate transmission among base stations (BSs) to reduce the interference effects, particularly for the cell-edge users. In this paper, we analyze the performance of a cloud network with static clustering where geographically close BSs form a cloud network of cooperating BSs. Because, of finite cooperation, the interference in a practical cloud radio cannot be removed and in this paper, the distance based interference is taken into account in the analysis. In particular, we consider centralized zero forcing equalizer and dirty paper precoding for cancelling the interference. Bounds are developed on the signal-to-interference ratio distribution and achievable rate with full and limited channel feedback from the cluster users. The adverse effect of finite clusters on the achievable rate is quantified. We show that, the number of cooperating BSs is more crucial than the cluster area when full channel state information form the cluster is available for precoding. Also, we study the impact of limiting the channel state information on the achievable rate. We show that even with a practically feasible feedback of about five to six channel states from each user, significant gain in mean rate and cell edge rate compared to conventional cellular systems can be obtained.

Connected through hyperedge HE-1 (induced by source paper "joint uplink downlink cell associations for interference networks with local connectivity"):
  with members:
    - "conferencing in wyner s asymmetric interference network effect of number of rounds"
    - "joint optimization of cloud and edge processing for fog radio access networks"
    - "degrees of freedom in wireless interference networks with cooperative transmission and backhaul load constraints"
    - "cell associations that maximize the average uplink downlink degrees of freedom"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "degrees of freedom of interference channels with comp transmission and reception"

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"
    - "network mimo transmitters with no csi can still be very useful"
    - "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"
    - "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:
    - "network mimo transmitters with no csi can still be very useful"
    - "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"
    - "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"
    - "network mimo transmitters with no csi can still be very useful"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "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"

Connected through hyperedge HE-5 (induced by source paper "cell associations that maximize the average uplink downlink degrees of freedom"):
  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"
    - "on uplink downlink duality for cellular ia"
    - "degrees of freedom of uplink downlink multiantenna cellular networks"
    - "cellular interference alignment"
    - "dynamic interference management"
    - "degrees of freedom of interference channels with comp transmission and reception"

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)