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 "analytical performance evaluation of beamforming under transceivers hardware imperfections"):
  Abstract: In this paper, we provide the mathematical framework to evaluate and quantify the performance of wireless systems, which employ beamforming, in the presence of hardware imperfections at both the basestation and the user equipment. In more detail, by taking a macroscopic view of the joint impact of hardware imperfections, we introduce a general model that accounts for transceiver impairments in beamforming transmissions. In order to evaluate their impact, we present novel closed form expressions for the outage probability and upper bounds for the characterization of the system's capacity. Our analysis reveals that the level of imperfection can significantly constraint the ergodic capacity. Therefore, it is important to take them into account when evaluating and designing beamforming systems.

Includes members:
  Member "wireless terahertz system architectures for networks beyond 5g":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "mac protocols for terahertz communication a comprehensive survey")
  Member "low cost cognitive radios against spectrum scarcity":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "ergodic capacity evaluation of wireless thz fiber extenders")
  Member "terahertz technologies to deliver optical network quality of experience in wireless systems beyond 5g":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "mac protocols for terahertz communication a comprehensive survey")
  Member "a new look at dual hop relaying performance limits with hardware impairments":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "on the performance of low altitude uav enabled secure af relaying with cooperative jamming and swipt")
  Member "mimo transmission with residual transmit rf impairments":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "nuts and bolts of a realistic stochastic geometric analysis of mmwave hetnets hardware impairments and channel aging")

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)