human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "a high diversity transceiver design for k user miso broadcast channels"
  Abstract: In this paper, a new transceiver architecture is proposed for K-user multiple-input single-output (MISO) broadcast channels (BCs) to overcome the drawback of the conventional linear zero-forcing (ZF) downlink beamforming. The proposed transceiver architecture is based on channel-adaptive user grouping and mixture of linear and nonlinear reception: it groups users with closely-aligned channels and applies superposition coding and successive interference cancellation (SIC) decoding to each group composed of users with closely-aligned channels, while applying ZF beamforming across roughly-orthogonal user groups. The outage probability and diversity order of the proposed transceiver architecture are analyzed based on newly derived closed-form lower bounds on the achievable rates of a general multi-user (MU) MISO BC with superposition coding and SIC decoding and the property of the proposed user grouping algorithm. It is shown that the proposed transceiver architecture can achieve the diversity order of the single-user maximum ratio transmit (MRT) beamforming. Hence, the proposed transceiver architecture can provide much higher diversity order and more reliable communication compared to the conventional ZF downlink beamforming under channel fading environments. Numerical results validate our analysis and show the superiority of the proposed scheme over the conventional ZF downlink beamforming in outage performance.

Question: Please tell me which class the center node 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)