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: "frameless aloha protocol for wireless networks"
  Abstract: We propose a novel distributed random access scheme for wireless networks based on slotted ALOHA, motivated by the analogies between successive interference cancellation and iterative belief-propagation decoding on erasure channels. The proposed scheme assumes that each user independently accesses the wireless link in each slot with a predefined probability, resulting in a distribution of user transmissions over slots. The operation bears analogy with rateless codes, both in terms of probability distributions as well as to the fact that the ALOHA frame becomes fluid and adapted to the current contention process. Our aim is to optimize the slot access probability in order to achieve rateless-like distributions, focusing both on the maximization of the resolution probability of user transmissions and the throughput of the scheme.

Connected through hyperedge HE-1 (induced by source paper "reliability latency performance of frameless aloha with and without feedback"):
  with members:
    - "finite length analysis of irregular repetition slotted aloha in the waterfall region"
    - "on the modeling and performance assessment of random access with sic"
    - "optimized frameless aloha for cooperative base stations with overlapped coverage areas"
    - "frameless aloha with reliability latency guarantees"
    - "inactivation decoding of lt and raptor codes analysis and code design"
    - "finite length analysis of frameless aloha"
    - "on frame asynchronous coded slotted aloha asymptotic finite length and delay analysis"
    - "error floor analysis of coded slotted aloha over packet erasure channels"

Connected through hyperedge HE-2 (induced by source paper "fixed symbol aided random access scheme for machine to machine communications"):
  with members:
    - "deep learning methods for improved decoding of linear codes"
    - "sparse message passing based preamble estimation for crowded m2m communications"
    - "massive connectivity with massive mimo part ii achievable rate characterization"
    - "massive connectivity with massive mimo part i device activity detection and channel estimation"
    - "irregular repetition slotted aloha over the rayleigh block fading channel with capture"
    - "convergence analysis and assurance for gaussian message passing iterative detector in massive mu mimo systems"
    - "iterative channel estimation using lse and sparse message passing for mmwave mimo systems"
    - "gaussian message passing iterative detection for mimo noma systems with massive access"

Connected through hyperedge HE-3 (induced by source paper "dnn aided block sparse bayesian learning for user activity detection and channel estimation in grant free non orthogonal random access"):
  with members:
    - "a vision of 6g wireless systems applications trends technologies and open research problems"
    - "fixed symbol aided random access scheme for machine to machine communications"
    - "deep learning methods for improved decoding of linear codes"
    - "asymptotically optimal estimation algorithm for the sparse signal with arbitrary distributions"
    - "massive connectivity with massive mimo part ii achievable rate characterization"
    - "massive connectivity with massive mimo part i device activity detection and channel estimation"
    - "convergence analysis and assurance for gaussian message passing iterative detector in massive mu mimo systems"
    - "iterative channel estimation using lse and sparse message passing for mmwave mimo systems"

Connected through hyperedge HE-4 (induced by source paper "enhancing contention resolution aloha using combining techniques"):
  with members:
    - "error floor analysis of coded slotted aloha over packet erasure channels"
    - "all to all broadcast for vehicular networks based on coded slotted aloha"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "cooperative slotted aloha for multi base station systems"
    - "the throughput of slotted aloha with diversity"
    - "aloha random access that operates as a rateless code"
    - "optimum header positioning in successive interference cancellation sic based aloha"
    - "sliding window based contention resolution diversity slotted aloha"

Connected through hyperedge HE-5 (induced by source paper "optimized frameless aloha for cooperative base stations with overlapped coverage areas"):
  with members:
    - "finite length analysis of frameless aloha"
    - "non orthogonal multiple access in multi cell networks theory performance and practical challenges"
    - "exploiting capture effect in frameless aloha for massive wireless random access"
    - "cooperative slotted aloha for multi base station systems"
    - "aloha random access that operates as a rateless code"
    - "pseudo random aloha for enhanced collision recovery in rfid"

Connected through hyperedge HE-6 (induced by source paper "frameless aloha with reliability latency guarantees"):
  with members:
    - "finite length analysis of frameless aloha"
    - "finite length analysis of frameless aloha with multi user detection"
    - "error floor analysis of coded slotted aloha over packet erasure channels"
    - "inactivation decoding analysis for lt codes"
    - "coded random access applying codes on graphs to design random access protocols"
    - "aloha random access that operates as a rateless code"

Connected through hyperedge HE-7 (induced by source paper "finite length analysis of frameless aloha"):
  with members:
    - "inactivation decoding analysis for lt codes"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "coded random access how coding theory helps to build random access protocols"
    - "aloha random access that operates as a rateless code"

Connected through hyperedge HE-8 (induced by source paper "grant free massive noma outage probability and throughput"):
  with members:
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "coded random access applying codes on graphs to design random access protocols"
    - "analytical modeling of uplink cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

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)