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 "secure precise wireless transmission with random subcarrier selection based directional modulation transmit antenna array"):
  Abstract: In this paper, a practical wireless transmission scheme is proposed to transmit confidential messages to the desired user securely and precisely by the joint use of multiple techniques including artificial noise (AN) projection, phase alignment (PA)/beamforming, and random subcarrier selection (RSCS) based on OFDM, and directional modulation (DM), namely RSCS-OFDM-DM. This RSCS-OFDM-DM scheme provides an extremely low-complexity structures for the transmitter and desired receiver and makes the secure and precise wireless transmission realizable in practice. For illegal eavesdroppers, the receive power of confidential messages is so weak that their receivers cannot intercept these confidential messages successfully once it is corrupted by AN. In such a scheme, the design of phase alignment/beamforming vector and AN projection matrix depend intimately on the desired direction angle and distance. It is particularly noted that the use of RSCS leads to a significant outcome that the receive power of confidential messages mainly concentrates on the small neighboring region around the desired receiver and only small fraction of its power leaks out to the remaining large broad regions. This concept is called secure precise transmission. The probability density function of real-time receive signal-to-interference-and-noise ratio (SINR) is derived. Also, the average SINR and its tight upper bound are attained. The approximate closed-form expression for average secrecy rate is derived by analyzing the first-null positions of SINR and clarifying the wiretap region.

Includes members:
  Member "covert communication in wireless relay networks":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "gaussian signalling for covert communications")
  Member "symbol level and multicast precoding for multiuser multiantenna downlink a survey classification and challenges":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "gpi based secrecy rate maximization beamforming scheme for wireless transmission with an aided directional modulation")
  Member "the random frequency diverse array a new antenna structure for uncoupled direction range indication in active sensing":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "artificial noise aided secure transmission with directional modulation based on random frequency diverse arrays")
  Member "artificial noise aided secure transmission in wiretap channels with transmitter side correlation":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "covert transmission with a self sustained relay")
  Member "location based beamforming for enhancing secrecy in rician wiretap channels":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "secrecy outage and diversity analysis of multiple cooperative source destination pairs")
  Member "directional modulation via symbol level precoding a way to enhance security":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "rethinking secure precoding via interference exploitation a smart eavesdropper perspective")
  Member "improving physical layer security in wireless communications using diversity techniques":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "jamming assisted eavesdropping over parallel fading channels")
  Member "relay selection improves the security reliability trade off in cognitive radio systems":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "transmit power policy and ergodic multicast rate analysis of cognitive radio networks in generalized fading")

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)