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 "on optimizing vlc networks for downlink multi user transmission a survey"):
  Abstract: The evolving explosion in high data rate services and applications will soon require the use of untapped, abundant unregulated spectrum of the visible light for communications to adequately meet the demands of the fifth-generation (5G) mobile technologies. Radio-frequency (RF) networks are proving to be scarce to cover the escalation in data rate services. Visible light communication (VLC) has emerged as a great potential solution, either in replacement of, or complement to, existing RF networks, to support the projected traffic demands. Despite of the prolific advantages of VLC networks, VLC faces many challenges that must be resolved in the near future to achieve a full standardization and to be integrated to future wireless systems. Here, we review the new, emerging research in the field of VLC networks and lay out the challenges, technological solutions, and future work predictions. Specifically, we first review the VLC channel capacity derivation, discuss the performance metrics and the associated variables; the optimization of VLC networks are also discussed, including resources and power allocation techniques, user-to-access point (AP) association and APs-to-clustered-users-association, APs coordination techniques, non-orthogonal multiple access (NOMA) VLC networks, simultaneous energy harvesting and information transmission using the visible light, and the security issue in VLC networks. Finally, we propose several open research problems to optimize the various VLC networks by maximizing either the sum rate, fairness, energy efficiency, secrecy rate, or harvested energy.

Includes members:
  Member "modeling the random orientation of mobile devices measurement analysis and lifi use case":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "hybrid lifi and wifi networks a survey")
  Member "non orthogonal multiple access for mobile vlc networks with random receiver orientation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "interplay between noma and other emerging technologies a survey")
  Member "a comparative survey of optical wireless technologies architectures and applications":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "6g wireless communication systems applications requirements technologies challenges and research directions")
  Member "dc bias and power allocation in cooperative vlc networks for joint information and energy transfer":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "user pairing link selection and power allocation for cooperative noma hybrid vlc rf systems")
  Member "securing visible light communication systems by beamforming in the presence of randomly distributed eavesdroppers":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "relay aided secure broadcasting for visible light communications")
  Member "link selection in hybrid rf vlc systems under statistical queueing constraints":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "vlc systems with fixed rate transmissions under statistical queueing constraints")
  Member "multi element vlc networks led assignment power control and optimum combining":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "noma for vlc downlink transmission with random receiver orientation")
  Member "optical non orthogonal multiple access for visible light communication":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "a survey of rate optimal power domain noma schemes for enabling technologies of future wireless networks")

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)