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 "precoding in multibeam satellite communications present and future challenges"):
  Abstract: Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall system throughput. As a matter of fact, users located at the beam edges suffer from very large interference for even a moderately aggressive planning of reuse-2. Although solutions for inter-beam interference management have been investigated at the satellite terminal, it turns out that the performance improvement does not justify the increased terminal complexity and cost. In this article, we pay attention to interference mitigation techniques that take place at the transmitter (i.e., the gateway). Based on this understanding, we provide our vision on advanced precoding techniques and user clustering methods for multibeam broadband fixed satellite communications. We also discuss practical challenges to deploy precoding schemes and the support introduced in the recently published DVB-S2X standard. Future challenges for novel configurations employing precoding are also provided.

Includes members:
  Member "multicast multigroup precoding and user scheduling for frame based satellite communications":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "rate splitting multiple access for multibeam satellite communications")
  Member "sum rate maximizing multigroup multicast beamforming under per antenna power constraints":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "distributed coordinated beamforming for multi cell multigroup multicast systems")
  Member "frame based precoding in satellite communications a multicast approach":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "generalized multicast multibeam precoding for satellite communications")
  Member "full frequency reuse multibeam satcoms frame based precoding and user scheduling":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "energy efficient symbol level precoding in multiuser miso based on relaxed detection region")
  Member "weighted fair multicast multigroup beamforming under per antenna power constraints":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "signal processing for high throughput satellites challenges in new interference limited scenarios")
  Member "gateway switching in q v band satellite feeder links":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "dvb s2x enabled precoding for high throughput satellite systems")
  Member "multi gateway cooperation in multibeam satellite systems":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "generalized multicast multibeam precoding for satellite communications")

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)