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: "fundamental limits of many user mac with finite payloads and fading"
  Abstract: Consider a (multiple-access) wireless communication system where users are connected to a unique base station over a shared-spectrum radio links. Each user has a fixed number $k$ of bits to send to the base station, and his signal gets attenuated by a random channel gain (quasi-static fading). In this paper we consider the many-user asymptotics of Chen-Chen-Guo'2017, where the number of users grows linearly with the blocklength. In addition, we adopt a per-user probability of error criterion of Polyanskiy'2017 (as opposed to classical joint-error probability criterion). Under these two settings we derive bounds on the optimal required energy-per-bit for reliable multi-access communication. We confirm the curious behaviour (previously observed for non-fading MAC) of the possibility of perfect multi-user interference cancellation for user densities below a critical threshold. Further we demonstrate the suboptimality of standard solutions such as orthogonalization (i.e., TDMA/FDMA) and treating interference as noise (i.e. pseudo-random CDMA without multi-user detection).

Connected through hyperedge HE-1 (induced by source paper "gaussian multiple and random access in the finite blocklength regime"):
  with members:
    - "lossless source coding in the point to point multiple access and random access scenarios"
    - "random access channel coding in the finite blocklength regime"
    - "capacity of gaussian many access channels"
    - "a proof of the strong converse theorem for gaussian multiple access channels"
    - "the third order term in the normal approximation for the awgn channel"
    - "many access channels the gaussian case with random user activities"
    - "on the dispersions of three network information theory problems"
    - "second order rate region of constant composition codes for the multiple access channel"

Connected through hyperedge HE-2 (induced by source paper "massive access for future wireless communication systems"):
  with members:
    - "non bayesian activity detection large scale fading coefficient estimation and unsourced random access with a massive mimo receiver"
    - "on the fundamental limits of mimo massive access communication"
    - "a joint graph based coding scheme for the unsourced random access gaussian channel"
    - "polar coding and random spreading for unsourced multiple access"
    - "energy efficient coded random access for the wireless uplink"
    - "sparcs for unsourced random access"
    - "random access channel coding in the finite blocklength regime"
    - "a new scaling law for activity detection in massive mimo systems"

Connected through hyperedge HE-3 (induced by source paper "optimizing information freshness using low power status updates via sleep wake scheduling"):
  with members:
    - "broadcast age of information in csma ca based wireless networks"
    - "energy efficient coded random access for the wireless uplink"
    - "minimizing the age of information in a csma environment"
    - "age optimal updates of multiple information flows"
    - "scheduling policies for minimizing age of information in broadcast wireless networks"
    - "timely status update in massive iot systems decentralized scheduling for wireless uplinks"
    - "sampling for data freshness optimization non linear age functions"
    - "distributed scheduling algorithms for optimizing information freshness in wireless networks"

Connected through hyperedge HE-4 (induced by source paper "energy efficient coded random access for the wireless uplink"):
  with members:
    - "a joint graph based coding scheme for the unsourced random access gaussian channel"
    - "massive mimo unsourced random access"
    - "massive random access with common alarm messages"
    - "improved scaling law for activity detection in massive mimo systems"
    - "sparse activity detection for massive connectivity"
    - "sparse signal processing for grant free massive iot connectivity"
    - "sparse signal processing for grant free massive connectivity a future paradigm for random access protocols in the internet of things"
    - "achievability bounds for t fold irregular repetition slotted aloha scheme in the gaussian mac"

Connected through hyperedge HE-5 (induced by source paper "optimal age energy trade off via sleep wake scheduling"):
  with members:
    - "broadcast age of information in csma ca based wireless networks"
    - "energy efficient coded random access for the wireless uplink"
    - "minimizing the age of information in a csma environment"
    - "timely status update in massive iot systems decentralized scheduling for wireless uplinks"
    - "sampling for data freshness optimization non linear age functions"
    - "optimizing information freshness in wireless networks under general interference constraints"
    - "optimizing age of information in wireless networks with perfect channel state information"
    - "age optimal information updates in multihop networks"

Connected through hyperedge HE-6 (induced by source paper "on the fundamental limits of mimo massive access communication"):
  with members:
    - "massive mimo unsourced random access"
    - "improved scaling law for activity detection in massive mimo systems"
    - "sparse activity detection for massive connectivity"
    - "massive connectivity with massive mimo part ii achievable rate characterization"
    - "a new scaling law for activity detection in massive mimo systems"
    - "massive connectivity with massive mimo part i device activity detection and channel estimation"
    - "fundamental limits of low density spreading noma with fading"
    - "capacity of gaussian many access channels"

Connected through hyperedge HE-7 (induced by source paper "uplink grant free random access solutions for urllc services in 5g new radio"):
  with members:
    - "short packets over block memoryless fading channels pilot assisted or noncoherent transmission"
    - "coded random access applying codes on graphs to design random access protocols"

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)