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: "design and characterization of a full duplex multiantenna system for wifi networks"
  Abstract: In this paper, we present an experiment- and simulation-based study to evaluate the use of full duplex (FD) as a potential mode in practical IEEE 802.11 networks. To enable the study, we designed a 20-MHz multiantenna orthogonal frequency-division-multiplexing (OFDM) FD physical layer and an FD media access control (MAC) protocol, which is backward compatible with current 802.11. Our extensive over-the-air experiments, simulations, and analysis demonstrate the following two results. First, the use of multiple antennas at the physical layer leads to a higher ergodic throughput than its hardware-equivalent multiantenna half-duplex (HD) counterparts for SNRs above the median SNR encountered in practical WiFi deployments. Second, the proposed MAC translates the physical layer rate gain into near doubling of throughput for multinode single-AP networks. The two results allow us to conclude that there are potentially significant benefits gained from including an FD mode in future WiFi standards.

Connected through hyperedge HE-1 (induced by source paper "best relay selection in gaussian half duplex diamond networks"):
  with members:
    - "efficiently finding simple schedules in gaussian half duplex relay line networks"
    - "on the optimality of simple schedules for networks with multiple half duplex relays"
    - "softnull many antenna full duplex wireless via digital beamforming"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"
    - "unmanned aerial vehicle with underlaid device to device communications performance and tradeoffs"
    - "wireless network simplification beyond diamond networks"
    - "gaussian half duplex relay networks improved constant gap and connections with the assignment problem"
    - "wireless network information flow a deterministic approach"

Connected through hyperedge HE-2 (induced by source paper "state space adaptive nonlinear self interference cancellation for full duplex communication"):
  with members:
    - "simultaneous transmit and receive operation in next generation ieee 802 11 wlans a mac protocol design approach"
    - "multi tap digital canceller for full duplex applications"
    - "accumulate and jam towards secure communication via a wireless powered full duplex jammer"
    - "full duplex relaying in mimo ofdm frequency selective channels with optimal adaptive filtering"
    - "wideband self adaptive rf cancellation circuit for full duplex radio operating principle and measurements"
    - "all digital self interference cancellation technique for full duplex systems"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"

Connected through hyperedge HE-3 (induced by source paper "robust transceiver design for full duplex decode and forward relay assisted mimo systems"):
  with members:
    - "state space adaptive nonlinear self interference cancellation for full duplex communication"
    - "all digital self interference cancellation technique for full duplex systems"
    - "capacity of the gaussian two hop full duplex relay channel with residual self interference"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "understanding the impact of phase noise on active cancellation in wireless full duplex"

Connected through hyperedge HE-4 (induced by source paper "performance analysis and enhancements for in band full duplex wireless local area networks"):
  with members:
    - "rcfd a novel channel access scheme for full duplex wireless networks based on contention in time and frequency domains"
    - "performance analysis of csma ca based medium access in full duplex wireless communications"
    - "all digital self interference cancellation technique for full duplex systems"
    - "full duplex mac protocol design and analysis"
    - "self interference cancellation with nonlinear distortion suppression for full duplex systems"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless systems"

Connected through hyperedge HE-5 (induced by source paper "robust transceiver design for mimo decode and forward full duplex relay"):
  with members:
    - "state space adaptive nonlinear self interference cancellation for full duplex communication"
    - "all digital self interference cancellation technique for full duplex systems"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "understanding the impact of phase noise on active cancellation in wireless full duplex"

Connected through hyperedge HE-6 (induced by source paper "max min fairness user scheduling and power allocation in full duplex ofdma systems"):
  with members:
    - "joint design of multi tap analog cancellation and digital beamforming for reduced complexity full duplex mimo systems"
    - "joint user scheduling and power optimization in full duplex cells with successive interference cancellation"
    - "user selection and power allocation in full duplex multicell networks"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "resource allocation in ofdma networks with half duplex and imperfect full duplex users"
    - "optimizing df cognitive radio networks with full duplex enabled energy access points"
    - "joint downlink base station association and power control for max min fairness computation and complexity"

Connected through hyperedge HE-7 (induced by source paper "on the secrecy capacity of a full duplex wirelessly powered communication system"):
  with members:
    - "exploiting interference for secrecy wireless information and power transfer"
    - "capacity of a full duplex wirelessly powered communication system with self interference and processing cost"
    - "power allocation for secure swipt systems with wireless powered cooperative jamming"
    - "physical layer security in heterogeneous networks with jammer selection and full duplex users"
    - "mimo wiretap channel under receiver side power constraints with applications to wireless power transfer and cognitive radio"
    - "wireless powered communication networks an overview"
    - "accumulate and jam towards secure communication via a wireless powered full duplex jammer"
    - "artificial noise aided secrecy information and power transfer in ofdma systems"

Connected through hyperedge HE-8 (induced by source paper "secure beamforming in full duplex swipt systems with loopback self interference cancellation"):
  with members:
    - "probabilistically robust swipt for secrecy misome systems"
    - "secure beamforming in full duplex swipt systems"
    - "transceiver design to maximize the weighted sum secrecy rate in full duplex swipt systems"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "secure and green swipt in distributed antenna networks with limited backhaul capacity"
    - "secure beamforming for mimo broadcasting with wireless information and power transfer"
    - "secrecy wireless information and power transfer with miso beamforming"

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.NI(Networking and Internet Architecture)