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: "outage behavior of slow fading channels with power control using noisy quantized csit"
  Abstract: The topic of this study is the outage behavior of multiple-antenna slow fading channels with quantized feedback and partial power control. A fixed-rate communicat ion system is considered. It is known from the literature that with error-free feedback, the outage-o ptimal quantizer for power control has a circular structure. Moreover, the diversity gain of the system incre ases polynomially with the cardinality of the power control codebook. Here, a similar system is studied, but when the feedback link is error-prone. We prove that in the high-SNR regime, the optimal quantizer structure with noisy feedback is still circular and the optimal Voronoi regions are contiguous non-zero probability intervals. Furthermore, the optimal power control codebook resembles a channel optimized scalar quantizer (COSQ), i.e., the Voronoi regions merge with erroneous feedback information. Using a COSQ, the outage performance of the system is superior to that of a no-feedback scheme. However, asymptotic analysis shows that the diversity gain of the system is the same as a no-CSIT scheme if there is a non-zero and non-vanishing feedback error probability.

Connected through hyperedge HE-1 (induced by source paper "on the dmt of tdd simo systems with channel dependent reverse channel training"):
  with members:
    - "bits about the channel multiround protocols for two way fading channels"
    - "estimation in gaussian noise properties of the minimum mean square error"
    - "power controlled feedback and training for two way mimo channels"
    - "approximately universal codes over slow fading channels"

Connected through hyperedge HE-2 (induced by source paper "bits about the channel multiround protocols for two way fading channels"):
  with members:
    - "power controlled feedback and training for two way mimo channels"
    - "diversity order gain with noisy feedback in multiple access channels"
    - "two models for noisy feedback in mimo channels"

Connected through hyperedge HE-3 (induced by source paper "power controlled feedback and training for two way mimo channels"):
  with members:
    - "bits about the channel multiround protocols for two way fading channels"
    - "limited rate channel state feedback for multicarrier block fading channels"
    - "diversity order gain with noisy feedback in multiple access channels"
    - "two models for noisy feedback in mimo channels"

Connected through hyperedge HE-4 (induced by source paper "two models for noisy feedback in mimo channels"):
  with members:
    - "power controlled feedback and training for two way mimo channels"
    - "diversity order gain with noisy feedback in multiple access channels"

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)