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: "miso broadcast channel with imperfect and un matched csit in the frequency domain dof region and transmission strategies"
  Abstract: In this contribution, we focus on a frequency domain two-user Multiple-Input-Single-Output Broadcast Channel (MISO BC) where the transmitter has imperfect and (un)matched Channel State Information (CSI) of the two users in two subbands. We provide an upper-bound to the Degrees-of-Freedom (DoF) region, which is tight compared to the state of the art. By decomposing the subbands into subchannels according to the CSI feedback qualities, we interpret the DoF region as the weighted-sum of that in each subchannel. Moreover, we study the sum \emph{DoF} loss when employing sub-optimal schemes, namely Frequency Division Multiple Access (FDMA), Zero-Forcing Beamforming (ZFBF) and the $S_3^{3/2}$ scheme proposed by Tandon et al. The results show that by switching among the sub-optimal strategies, we can obtain at least 80% and 66.7% of the optimal sum \emph{DoF} performance for the unmatched and matched CSIT scenario respectively.

Connected through hyperedge HE-1 (induced by source paper "multiuser millimeter wave beamforming strategies with quantized and statistical csit"):
  with members:
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "alternating minimization algorithms for hybrid precoding in millimeter wave mimo systems"
    - "achievable dof regions of mimo networks with imperfect csit"
    - "miso networks with imperfect csit a topological rate splitting approach"
    - "enhancing the estimation of mm wave large array channels by exploiting spatio temporal correlation and sparse scattering"
    - "hierarchical codebook design for beamforming training in millimeter wave communication"
    - "robust transmission in downlink multiuser miso systems a rate splitting approach"
    - "a rate splitting strategy for max min fair multigroup multicasting"

Connected through hyperedge HE-2 (induced by source paper "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"):
  with members:
    - "miso networks with imperfect csit a topological rate splitting approach"
    - "robust transmission in downlink multiuser miso systems a rate splitting approach"
    - "a rate splitting strategy for massive mimo with imperfect csit"
    - "sum rate maximization for mu miso with partial csit using joint multicasting and broadcasting"
    - "rate analysis of two receiver miso broadcast channel with finite rate feedback a rate splitting approach"
    - "achieving max min fairness for mu miso with partial csit a multicast assisted transmission"
    - "optimal multiuser transmit beamforming a difficult problem with a simple solution structure"
    - "ammse optimization for multiuser miso systems with imperfect csit and perfect csir"

Connected through hyperedge HE-3 (induced by source paper "miso networks with imperfect csit a topological rate splitting approach"):
  with members:
    - "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"
    - "dof analysis of the mimo broadcast channel with alternating hybrid csit"
    - "rate analysis of two receiver miso broadcast channel with finite rate feedback a rate splitting approach"
    - "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"
    - "multilevel topological interference management"

Connected through hyperedge HE-4 (induced by source paper "dof analysis of the mimo broadcast channel with alternating hybrid csit"):
  with members:
    - "miso broadcast channel with hybrid csit beyond two users"
    - "distributed space time interference alignment with moderately delayed csit"
    - "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 degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "the degrees of freedom region of temporally correlated mimo networks with delayed csit"
    - "on the degrees of freedom of the k user time correlated broadcast channel with delayed csit"
    - "imperfect and unmatched csit is still useful for the frequency correlated miso broadcast channel"
    - "on the dof region of the k user miso broadcast channel with hybrid csit"

Connected through hyperedge HE-5 (induced by source paper "achievable dof regions of mimo networks with imperfect csit"):
  with members:
    - "elevated multiplexing and signal space partitioning in the 2 user mimo ic with partial csit"
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "dof analysis of the mimo broadcast channel with alternating hybrid csit"
    - "rate analysis of two receiver miso broadcast channel with finite rate feedback a rate splitting approach"
    - "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"
    - "the degrees of freedom region of temporally correlated mimo networks with delayed csit"
    - "optimal dof region of the two user miso bc with general alternating csit"
    - "imperfect and unmatched csit is still useful for the frequency correlated miso broadcast channel"

Connected through hyperedge HE-6 (induced by source paper "rate analysis of two receiver miso broadcast channel with finite rate feedback a rate splitting approach"):
  with members:
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "sum rate maximization for mu miso with partial csit using joint multicasting and broadcasting"
    - "achieving max min fairness for mu miso with partial csit a multicast assisted transmission"
    - "tomlinson harashima precoding for multiuser mimo systems with quantized csi feedback and user scheduling"
    - "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"
    - "quantized csi based tomlinson harashima precoding in multiuser mimo systems"
    - "optimal dof region of the two user miso bc with general alternating csit"
    - "degrees of freedom region of miso ofdma broadcast channel with imperfect csit"

Connected through hyperedge HE-7 (induced by source paper "dof analysis of the k user miso broadcast channel with hybrid csit"):
  with members:
    - "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 degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "on the degrees of freedom of the k user time correlated broadcast channel with delayed csit"
    - "imperfect and unmatched csit is still useful for the frequency correlated miso broadcast channel"
    - "on the dof region of the k user miso broadcast channel with hybrid csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "degrees of freedom region of the miso broadcast channel with general mixed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"

Connected through hyperedge HE-8 (induced by source paper "sum rate maximization for mu miso with partial csit using joint multicasting and broadcasting"):
  with members:
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "linear transceiver design for a mimo interfering broadcast channel achieving max min fairness"

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)