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: "adaptive limited feedback for sum rate maximizing beamforming in cooperative multicell systems"
  Abstract: Base station cooperation improves the sum-rates that can be achieved in cellular systems. Conventional cooperation techniques require sharing large amounts of information over finite-capacity backhaul links and assume that base stations have full channel state information (CSI) of all the active users in the system. In this paper, a new limited feedback strategy is proposed for multicell beamforming where cooperation is restricted to sharing only the CSI of active users among base stations. The system setup considered is a linear array of cells based on the Wyner model. Each cell contains single-antenna users and multi-antenna base stations. Closed-form expressions for the beamforming vectors that approximately maximize the sum-rates in a multicell system are first presented, assuming full CSI at the transmitter. For the more practical case of a finite-bandwidth feedback link, CSI of the desired and interfering channels is quantized at the receiver before being fed back to the base station. An upper bound on the mean loss in sum rate due to random vector quantization is derived. A new feedback-bit allocation strategy, to partition the available bits between the desired and interfering channels, is developed to approximately minimize the mean loss in sum-rate due to quantization. The proposed feedback-bit partitioning algorithm is shown, using simulations, to yield sum-rates close to the those obtained using full CSI at base stations.

Connected through hyperedge HE-1 (induced by source paper "rate splitting for multi antenna downlink precoder design and practical implementation"):
  with members:
    - "rate splitting unifying sdma oma noma and multicasting in miso broadcast channel a simple two user rate analysis"
    - "on linearly precoded rate splitting for mimo broadcast channels"
    - "linearly precoded rate splitting optimality and non optimality for mimo broadcast channels"
    - "rate splitting multiple access for downlink communication systems bridging generalizing and outperforming sdma and noma"
    - "hybrid beamforming via the kronecker decomposition for the millimeter wave massive mimo systems"
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "robust transmission in downlink multiuser miso systems a rate splitting approach"
    - "a rate splitting strategy for massive mimo with imperfect csit"

Connected through hyperedge HE-2 (induced by source paper "sum rate maximization of multicell miso networks with limited information exchange"):
  with members:
    - "a deep learning framework for optimization of miso downlink beamforming"
    - "opportunistic downlink interference alignment for multi cell mimo networks"
    - "coordinated regularized zero forcing precoding for multicell miso systems with limited feedback"
    - "joint transmission with limited backhaul connectivity"
    - "analysis of massive mimo enabled downlink wireless backhauling for full duplex small cells"
    - "sinr and throughput scaling in ultradense urban cellular networks"
    - "on the spatial degrees of freedom of multicell and multiuser mimo channels"
    - "on feasibility of interference alignment in mimo interference networks"

Connected through hyperedge HE-3 (induced by source paper "cell edge aware precoding for downlink massive mimo cellular networks"):
  with members:
    - "distributed optimization of hierarchical small cell networks a gnep framework"
    - "massive mimo ten myths and one critical question"
    - "operating massive mimo in unlicensed bands for enhanced coexistence and spatial reuse"
    - "energy efficient design of mimo heterogeneous networks with wireless backhaul"
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "three practical aspects of massive mimo intermittent user activity pilot synchronism and asymmetric deployment"
    - "fractional pilot reuse in massive mimo systems"
    - "a tractable model for noncoherent joint transmission base station cooperation"

Connected through hyperedge HE-4 (induced by source paper "coordinated regularized zero forcing precoding for multicell miso systems with limited feedback"):
  with members:
    - "linear precoding based on polynomial expansion large scale multi cell mimo systems"
    - "large system analysis of cooperative multi cell downlink transmission via regularized channel inversion with imperfect csit"
    - "optimal power allocation and user loading for multiuser miso channels with regularized channel inversion"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "base station cooperation with feedback optimization a large system analysis"
    - "adaptive spatial intercell interference cancellation in multicell wireless networks"
    - "mimo broadcast channels with finite rate feedback"
    - "on the user selection for mimo broadcast channels"

Connected through hyperedge HE-5 (induced by source paper "bidirectional user throughput maximization based on feedback reduction in lifi networks"):
  with members:
    - "performance analysis and optimization for interference alignment over mimo interference channels with limited feedback"
    - "towards understanding the fundamentals of mobility in cellular networks"

Connected through hyperedge HE-6 (induced by source paper "on the optimal feedback rate in interference limited multi antenna cellular systems"):
  with members:
    - "success probability and area spectral efficiency in multiuser mimo hetnets"
    - "spectral efficiency of dynamic coordinated beamforming a stochastic geometry approach"
    - "spectral efficiency scaling laws in dense random wireless networks with multiple receive antennas"
    - "user centric intercell interference nulling for downlink small cell networks"
    - "interference coordination random clustering and adaptive limited feedback"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "downlink multi antenna heterogeneous cellular network with load balancing"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"

Connected through hyperedge HE-7 (induced by source paper "cooperative channel estimation for coordinated transmission with limited backhaul"):
  with members:
    - "csit sharing over finite capacity backhaul for spatial interference alignment"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "robust monotonic optimization framework for multicell miso systems"
    - "uplink comp under a constrained backhaul and imperfect channel knowledge"
    - "k means has polynomial smoothed complexity"
    - "distributed compression for the uplink of a backhaul constrained coordinated cellular network"

Connected through hyperedge HE-8 (induced by source paper "how much feedback is required in multi antenna downlink cellular systems"):
  with members:
    - "spectral efficiency of dynamic coordinated beamforming a stochastic geometry approach"
    - "spectral efficiency scaling laws in dense random wireless networks with multiple receive antennas"
    - "user centric intercell interference nulling for downlink small cell networks"
    - "interference coordination random clustering and adaptive limited feedback"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "downlink sdma with limited feedback in interference limited wireless networks"
    - "adaptive bit partitioning for multicell intercell interference nulling with delayed limited feedback"

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)