human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "linear and nonlinear frequency division multiplexing"):
  Abstract: Two signal multiplexing schemes for optical fiber communication are considered: Wavelength-division multiplexing (WDM) and nonlinear frequency-division multiplexing (NFDM), based on the nonlinear Fourier transform (NFT). Achievable information rates (AIRs) of NFDM and WDM are compared in a network scenario with an ideal lossless model of the optical fiber in the defocusing regime. It is shown that the NFDM AIR is greater than the WDM AIR subject to a bandwidth and average power constraint, in a representative system with one symbol per user. The improvement results from nonlinear signal multiplexing.

Includes members:
  Member "a novel detection strategy for nonlinear frequency division multiplexing":
    also connected through other hyperedges:
      (none)
  Member "decision feedback detection strategy for nonlinear frequency division multiplexing":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "improved detection strategies for nonlinear frequency division multiplexing")
  Member "communication using eigenvalues of higher multiplicity of the nonlinear fourier transform":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "statistics of the nonlinear discrete spectrum of a noisy pulse")
  Member "the kolmogorov zakharov model for optical fiber communication":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "nonlinear frequency division multiplexing")
  Member "correlated eigenvalues optical communications":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "time bandwidth product perspective for multi soliton phase modulation")
  Member "why noise and dispersion may seriously hamper nonlinear frequency division multiplexing":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "nonlinear fourier transform of truncated multi soliton pulses")
  Member "polarization division multiplexing based on the nonlinear fourier transform":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "dual polarization nonlinear fourier transform based optical communication system")
  Member "nonlinear frequency division multiplexing in the focusing regime":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "capacity lower bounds of the noncentral chi channel with applications to soliton amplitude modulation")

Question: Please tell me which class the source paper 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)