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: "joint beamforming optimization and power control for full duplex mimo two way relay channel"
  Abstract: In this paper, we explore the use of full-duplex radio to improve the spectrum efficiency in a two-way relay channel where two sources exchange information through an multi-antenna relay, and all nodes work in the full-duplex mode. The full-duplex operation can reduce the overall communication to only one phase but suffers from the self-interference. Instead of purely suppressing the self-interference, we aim to maximize the end-to-end performance by jointly optimizing the beamforming matrix at the relay which uses the amplify-and-forward protocol as well as the power control at the sources. To be specific, we propose iterative algorithms and 1-D search to solve two problems: finding the achievable rate region and maximizing the sum rate. At each iteration, either the analytical solution or convex formulation is obtained. We compare the proposed full-duplex two-way relaying with the conventional half-duplex two-way relaying, a full-duplex one-way relaying and a performance upper bound. Numerical results show that the proposed full-duplex scheme significantly improves the achievable data rates over the conventional scheme.

Connected through hyperedge HE-1 (induced by source paper "full duplex transmission optimization for bi directional mimo links with qos guarantees"):
  with members:
    - "hardware impairments aware transceiver design for full duplex amplify and forward mimo relaying"
    - "joint design of multi tap analog cancellation and digital beamforming for reduced complexity full duplex mimo systems"
    - "advanced coordinated beamforming for the downlink of future lte cellular networks"
    - "signaling design of two way mimo full duplex channel optimality under imperfect transmit front end chain"
    - "reference receiver based digital self interference cancellation in mimo full duplex transceivers"
    - "on the outage probability of the full duplex interference limited relay channel"
    - "full duplex mobile device pushing the limits"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-2 (induced by source paper "a survey on low latency towards 5g ran core network and caching solutions"):
  with members:
    - "stochastic optimization and control framework for 5g network slicing with effective isolation"
    - "ultra reliable and low latency communications in 5g downlink physical layer aspects"
    - "human in the loop wireless communications machine learning and brain aware resource management"
    - "r fft function split at ifft fft in unified lte cran and cable access network"
    - "a survey on mobile edge networks convergence of computing caching and communications"
    - "joint user association power control and scheduling in multi cell 5g networks"
    - "fundamental limits on latency in transceiver cache aided hetnets"
    - "decentralized coded caching in wireless networks trade off between storage and latency"

Connected through hyperedge HE-3 (induced by source paper "energy efficient multi pair two way af full duplex massive mimo relaying"):
  with members:
    - "a survey of multi objective optimization in wireless sensor networks metrics algorithms and open problems"
    - "power allocation for multi pair massive mimo two way af relaying with linear processing"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "energy efficiency optimization in relay assisted mimo systems with perfect and statistical csi"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "in band full duplex wireless challenges and opportunities"
    - "green cellular networks a survey some research issues and challenges"
    - "energy and spectral efficiency of very large multiuser mimo systems"

Connected through hyperedge HE-4 (induced by source paper "self interference in full duplex multi user mimo channels"):
  with members:
    - "full duplex mimo small cell networks performance analysis"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "experiment driven characterization of full duplex wireless systems"

Connected through hyperedge HE-5 (induced by source paper "technical report outage performance of full duplex mimo df relaying using zero forcing beamforming"):
  with members:
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "performance analysis of optimal single stream beamforming in mimo dual hop af systems"
    - "mimo two way relay channel diversity multiplexing tradeoff analysis"

Connected through hyperedge HE-6 (induced by source paper "joint relay user beamforming design in a full duplex two way relay channel"):
  with members:
    - "low complexity end to end performance optimization in mimo full duplex relay systems"

Connected through hyperedge HE-7 (induced by source paper "directional antennas for interference management in full duplex cellular networks"):
  with members:
    - "a primer on cellular network analysis using stochastic geometry"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "uplink performance analysis of dense cellular networks with los and nlos transmissions"
    - "passive loop interference suppression in large scale full duplex cellular networks"
    - "full duplex radio for uplink downlink transmission with spatial randomness"
    - "full duplex mimo small cell networks performance analysis"
    - "throughput analysis for full duplex wireless networks with imperfect self interference cancellation"
    - "exploiting known interference as green signal power for downlink beamforming optimization"

Connected through hyperedge HE-8 (induced by source paper "multipair two way relay network with harvest then transmit users resolving pairwise uplink downlink coupling"):
  with members:
    - "rank two beamforming and power allocation in multicasting relay networks"
    - "on the efficiency of far field wireless power transfer"
    - "spatial domain simultaneous information and power transfer for mimo channels"
    - "joint transceiver and power splitter design over two way relaying channel with lattice codes and energy harvesting"
    - "secure and green swipt in distributed antenna networks with limited backhaul capacity"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "beamforming for miso interference channels with qos and rf energy transfer"
    - "physical layer multicasting by stochastic transmit beamforming and alamouti space time coding"

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)