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Center node: "space time encoded miso broadcast channel with outdated csit an error rate and diversity performance analysis"
  Abstract: Studies of the MISO Broadcast Channel (BC) with delayed Channel State Information at the Transmitter (CSIT) have so far focused on the sum-rate and Degrees-of-Freedom (DoF) region analysis. In this paper, we investigate for the first time the error rate performance at finite SNR and the diversity-multiplexing tradeoff (DMT) at infinite SNR of a space-time encoded transmission over a two-user MISO BC with delayed CSIT. We consider the so-called MAT protocol obtained by Maddah-Ali and Tse, which was shown to provide 33% DoF enhancement over TDMA. While the asymptotic DMT analysis shows that MAT is always preferable to TDMA, the Pairwise Error Probability analysis at finite SNR shows that MAT is in fact not always a better alternative to TDMA. Benefits can be obtained over TDMA only at very high rate or once concatenated with a full-rate full-diversity space-time code. The analysis is also extended to spatially correlated channels and the influence of transmit correlation matrices and user pairing strategies on the performance are discussed. Relying on statistical CSIT, signal constellations are further optimized to improve the error rate performance of MAT and make it insensitive to user orthogonality. Finally, other transmission strategies relying on delayed CSIT are discussed.

Connected through hyperedge HE-1 (induced by source paper "a survey on mimo transmission with discrete input signals technical challenges advances and future trends"):
  with members:
    - "asymptotic performance analysis of a k hop amplify and forward relay mimo channel"
    - "iterative distributed minimum total mse approach for secure communications in mimo interference channels"
    - "asymptotic analysis of su mimo channels with transmitter noise and mismatched joint decoding"
    - "secure massive mimo transmission with an active eavesdropper"
    - "interference aligned space time transmission with diversity for the 2 times 2 x network"
    - "high snr asymptotics of mutual information for discrete constellations with applications to bicm"
    - "differential distributed space time coding with imperfect synchronization in frequency selective channels"
    - "what will 5g be"

Connected through hyperedge HE-2 (induced by source paper "throughput region of spatially correlated interference packet networks"):
  with members:
    - "linear degrees of freedom of mimo broadcast channels with reconfigurable antennas in the absence of csit"
    - "optimal sum dof of the k user miso bc with current and delayed feedback"
    - "optimal dof of the k user broadcast channel with delayed and imperfect current csit"
    - "when does spatial correlation add value to delayed channel state information"
    - "two user erasure interference channels with local delayed csit"
    - "transmit beamforming for miso broadcast channels with statistical and delayed csit"
    - "informational bottlenecks in two unicast wireless networks with delayed csit"
    - "secure degrees of freedom region of the two user miso broadcast channel with alternating csit"

Connected through hyperedge HE-3 (induced by source paper "a novel transmission scheme for the k user broadcast channel with delayed csit"):
  with members:
    - "an achievable rate region for the broadcast channel with feedback"
    - "multiuser broadcast erasure channel with feedback capacity and algorithms"
    - "completely stale transmitter channel state information is still very useful"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"
    - "multiuser mimo achievable rates with downlink training and channel state feedback"

Connected through hyperedge HE-4 (induced by source paper "achievable sum dof of the k user mimo interference channel with delayed csit"):
  with members:
    - "achievable dof delay trade offs for the k user mimo interference channel with delayed csit"
    - "degrees of freedom of the k user miso interference channel with delayed local csit"
    - "transmit beamforming for miso broadcast channels with statistical and delayed csit"
    - "on the degrees of freedom of the k user miso interference channel with imperfect delayed csit"
    - "the degrees of freedom region of temporally correlated mimo networks with delayed csit"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"

Connected through hyperedge HE-5 (induced by source paper "transmit beamforming for miso broadcast channels with statistical and delayed csit"):
  with members:
    - "power scaling of uplink massive mimo systems with arbitrary rank channel means"
    - "statistical beamforming on the grassmann manifold for the two user broadcast channel"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "completely stale transmitter channel state information is still very useful"

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)