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 symbol level precoding in multiuser miso based on relaxed detection region"):
  Abstract: This paper addresses the problem of exploiting interference among simultaneous multiuser transmissions in the downlink of multiple-antenna systems. Using symbol-level precoding, a new approach toward addressing the multiuser interference is discussed through jointly utilizing the channel state information (CSI) and data information (DI). The interference among the data streams is transformed under certain conditions to a useful signal that can improve the signal-to-interference noise ratio (SINR) of the downlink transmissions and as a result the system’s energy efficiency. In this context, new constructive interference precoding techniques that tackle the transmit power minimization (min power) with individual SINR constraints at each user’s receiver have been proposed. In this paper, we generalize the constructive interference (CI) precoding design under the assumption that the received MPSK symbol can reside in a relaxed region in order to be correctly detected. Moreover, a weighted maximization of the minimum SNR among all users is studied taking into account the relaxed detection region. Symbol error rate analysis (SER) for the proposed precoding is discussed to characterize the tradeoff between transmit power reduction and SER increase due to the relaxation. Based on this tradeoff, the energy efficiency performance of the proposed technique is analyzed. Finally, extensive numerical results show that the proposed schemes outperform other state-of-the-art techniques.

Includes members:
  Member "symbol level multiuser miso precoding for multi level adaptive modulation a multicast view":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "directional modulation via symbol level precoding a way to enhance security")
  Member "constructive interference through symbol level precoding for multi level modulation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "symbol level and multicast precoding for multiuser multiantenna downlink a survey classification and challenges")
  Member "constructive multiuser interference in symbol level precoding for the miso downlink channel":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "one bit precoding and constellation range design for massive mimo with qam signaling")
  Member "energy efficient symbol level precoding in multiuser miso channels":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "symbol level multiuser miso precoding for multi level adaptive modulation")
  Member "exploiting known interference as green signal power for downlink beamforming optimization":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "rethinking secure precoding via interference exploitation a smart eavesdropper perspective")
  Member "multicast multigroup precoding and user scheduling for frame based satellite communications":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "rate splitting multiple access for multibeam satellite communications")
  Member "optimal multiuser transmit beamforming a difficult problem with a simple solution structure":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "massive mimo has unlimited capacity")
  Member "a multicast approach for constructive interference precoding in miso downlink channel":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "symbol level and multicast precoding for multiuser multiantenna downlink a survey classification and challenges")

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)