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 "propagation modeling and analysis of reconfigurable intelligent surfaces for indoor and outdoor applications in 6g wireless systems"):
  Abstract: In 5G networks, the enhanced mobile broadband, massive Internet-of-things, and ultra-reliable and low latency communications are defined as three use-cases with diverse requirements. To cope with these objectives, more radical physical layer concepts are needed to comprehend the potential requirements in future wireless systems. This has pushed researchers to look into new paradigms beyond 5G and 6G wireless systems are conceptualized in recent years. One of the promising technologies is the so-called reconfigurable intelligent surfaces (RISs) which convert the wireless channel into a transmit entity by manipulating the impinging waves using artificial elements. In this paper, the potential benefits of using RISs are investigated for indoor/outdoor setups and various frequency bands. Many RIS-assisted communication scenarios are studied to ensure reliable transmission in deteriorated channels. First, a general propagation model with a single RIS is considered and the effect of the total number of reflecting elements on the distribution of the received SNR and error performance is investigated. Also, the path loss exponent is derived for below and above 6 GHz by considering empirical path loss models. Furthermore, propagation models with multiple RISs are developed and analyzed for indoor and outdoor NLOS scenarios. The bit error performance is evaluated and the relation between error performance and the number of reflecting elements of RISs is determined. RIS selection strategies are also investigated for systems equipped with multiple RISs. Through extensive simulations, it is demonstrated that the RIS-assisted systems provide promising solutions for indoor/outdoor scenarios and exhibit significant results in error performance and achievable data rates even in the presence of system imperfections such as limited range phase adjustment and imperfect channel phase estimation at RISs.

Includes members:
  Member "a novel communication paradigm for high capacity and security via programmable indoor wireless environments in next generation wireless systems":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "exploiting randomly located blockages for large scale deployment of intelligent surfaces")
  Member "secure wireless communication via intelligent reflecting surface":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "overhead aware design of reconfigurable intelligent surfaces in smart radio environments")
  Member "enabling secure wireless communications via intelligent reflecting surfaces":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "intelligent reflecting surface assisted secure wireless communications with multiple transmit and multiple receive antennas")
  Member "secrecy rate maximization for intelligent reflecting surface assisted multi antenna communications":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "overhead aware design of reconfigurable intelligent surfaces in smart radio environments")
  Member "the roadmap to 6g ai empowered wireless networks":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "when wireless security meets machine learning motivation challenges and research directions")
  Member "energy efficient multi user miso communication using low resolution large intelligent surfaces":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "mimo noma networks relying on reconfigurable intelligent surface a signal cancellation based design")
  Member "intelligent reflecting surface enhanced wireless network via joint active and passive beamforming":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "overhead aware design of reconfigurable intelligent surfaces in smart radio environments")
  Member "beamforming optimization for intelligent reflecting surface with discrete phase shifts":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "intelligent reflecting surface assisted secure wireless communications with multiple transmit and multiple receive antennas")

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)