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 "energy efficient power allocation for secure communications in large scale mimo relaying systems"):
  Abstract: In this paper, we address the problem of energy-efficient power allocation for secure communications in an amplify-and-forward (AF) large-scale multiple-input multiple-output (LS-MIMO) relaying system in presence of a passive eavesdropper. The benefits of an AF LS-MIMO relay are exploited to significantly improve the secrecy performance, especially the secrecy energy efficiency (bit per Joule). We first analyze the impact of transmit power at the relay on the secrecy outage capacity, and prove that the secrecy outage capacity is a concave function of transmit power under very practical assumptions, i.e. no eavesdropper channel state information (CSI) and imperfect legitimate CSI. Then, we propose an energy-efficient power allocation scheme to maximize the secrecy energy efficiency. Finally, simulation results validate the advantage of the proposed energy-efficient scheme compared to the capacity maximization scheme.

Includes members:
  Member "on the secrecy outage capacity of physical layer security in large scale mimo relaying systems with imperfect csi":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "enabling security and high energy efficiency in the internet of things with massive mimo hybrid precoding")
  Member "energy efficient joint source and channel sensing in cognitive radio sensor networks":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "joint optimization of spectrum sensing and accessing in multiuser miso cognitive networks")
  Member "secure beamforming for mimo two way communications with an untrusted relay":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "energy harvesting based secure two way communication using an untrusted relay")
  Member "performance analysis for physical layer security in multi antenna downlink networks with limited csi feedback":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "secrecy analysis of random mimo wireless networks over alpha mu fading channels")
  Member "optimal relay selection for physical layer security in cooperative wireless networks":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "secrecy outage analysis of non orthogonal spectrum sharing for heterogeneous cellular networks")
  Member "large system analysis of linear precoding in miso broadcast channels with confidential messages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "secure regularized zero forcing for multiuser mimome channels")
  Member "energy efficient optimization for physical layer security in multi antenna downlink networks with qos guarantee":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "enabling security and high energy efficiency in the internet of things with massive mimo hybrid precoding")
  Member "cooperative jamming for secure communications in mimo relay networks":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "multi antenna jamming in covert communication")

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)