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 "mu mimo communications with mimo radar from co existence to joint transmission"):
  Abstract: Beamforming techniques are proposed for a joint multi-input-multi-output (MIMO) radar-communication (RadCom) system, where a single device acts both as a radar and a communication base station (BS) by simultaneously communicating with downlink users and detecting radar targets. Two operational options are considered, where we first split the antennas into two groups, one for radar and the other for communication. Under this deployment, the radar signal is designed to fall into the null-space of the downlink channel. The communication beamformer is optimized such that the beampattern obtained matches the radar's beampattern while satisfying the communication performance requirements. To reduce the optimizations' constraints, we consider a second operational option, where all the antennas transmit a joint waveform that is shared by both radar and communications. In this case, we formulate an appropriate probing beampattern, while guaranteeing the performance of the downlink communications. By incorporating the SINR constraints into objective functions as penalty terms, we further simplify the original beamforming designs to weighted optimizations, and solve them by efficient manifold algorithms. Numerical results show that the shared deployment outperforms the separated case significantly, and the proposed weighted optimizations achieve a similar performance to the original optimizations, despite their significantly lower computational complexity.

Includes members:
  Member "robust mimo beamforming for cellular and radar coexistence":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "analysis of worst case interference in underlay radar massive mimo spectrum sharing scenarios")
  Member "interference exploitation for radar and cellular coexistence the power efficient approach":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "toward dual functional radar communication systems optimal waveform design")
  Member "coordinated multicell multicast beamforming based on manifold optimization":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "joint multicast beamforming and user scheduling in large scale antenna systems")
  Member "an efficient manifold algorithm for constructive interference based constant envelope precoding":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "quantized constant envelope precoding with psk and qam signaling")
  Member "coexistence analysis between radar and cellular system in los channel":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "interference exploitation for radar and cellular coexistence the power efficient approach")
  Member "optimum co design for spectrum sharing between matrix completion based mimo radars and a mimo communication system":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "interference removal for radar communication co existence the random scattering case")
  Member "target detection performance of spectrum sharing mimo radars":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "toward dual functional radar communication systems optimal waveform design")
  Member "manopt a matlab toolbox for optimization on manifolds":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "joint constellation design for the two user non coherent multiple access channel")

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)