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: "full duplex radio for uplink downlink wireless access with spatially random nodes"
  Abstract: A full-duplex (FD) multiple antenna access point (AP) communicating with single antenna half-duplex (HD) spatially random users to support simultaneous uplink (UL)/downlink (DL) transmissions is investigated. Since FD nodes are inherently constrained by the loopback interference (LI), we study precoding schemes for the AP based on maximum ratio combining (MRC)/maximal ratio transmission (MRT), zero-forcing, and the optimal scheme for UL and DL sum rate maximization using tools from stochastic geometry. In order to shed insights into the systems performance, simple expressions for single antenna/perfect LI cancellation/negligible internode interference cases are also presented. We show that FD precoding at AP improves the UL/DL sum rate and hence a doubling of the performance of the HD mode is achievable. In particular, our results show that these impressive performance gains remain substantially intact even if the LI cancellation is imperfect. Furthermore, relative performance gap between FD and HD modes increases as the number of transmit/receive antennas becomes large, while with the MRC/MRT scheme, increasing the receive antenna number at FD AP, is more beneficial in terms of sum rate than increasing the transmit antenna number.

Connected through hyperedge HE-1 (induced by source paper "transmission capacity of full duplex mimo ad hoc network with limited self interference cancellation"):
  with members:
    - "full duplex mimo small cell networks with interference cancellation"
    - "throughput analysis for full duplex wireless networks with imperfect self interference cancellation"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless systems"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "an overview of the transmission capacity of wireless networks"
    - "transmission capacity of ad hoc networks with spatial diversity"

Connected through hyperedge HE-2 (induced by source paper "on the outage analysis and finite snr diversity multiplexing tradeoff of hybrid duplex systems for aeronautical communications"):
  with members:
    - "all digital self interference cancellation technique for full duplex systems"
    - "capacity of the gaussian two hop full duplex relay channel with residual self interference"
    - "mobile communication systems in the presence of fading shadowing noise and interference"
    - "analysis of oscillator phase noise effects on self interference cancellation in full duplex ofdm radio transceivers"
    - "full duplex transceiver system calculations analysis of adc and linearity challenges"
    - "in band full duplex wireless challenges and opportunities"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-3 (induced by source paper "resource allocation and relay selection in full duplex cooperative orthogonal frequency division multiple access networks"):
  with members:
    - "on the uplink spectral efficiency of full duplex cooperative ofdma systems"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "in band full duplex wireless challenges and opportunities"
    - "resource allocation with subcarrier pairing in ofdma two way relay networks"

Connected through hyperedge HE-4 (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-5 (induced by source paper "full duplex mimo small cell networks with interference cancellation"):
  with members:
    - "self interference in full duplex multi user mimo channels"
    - "joint backhaul access analysis of full duplex self backhauling heterogeneous networks"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "analysis of massive mimo enabled downlink wireless backhauling for full duplex small cells"
    - "optimal low complexity self interference cancellation for full duplex mimo small cells"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "performance analysis of partial interference cancellation in multi antenna udns"
    - "massive mimo enabled full duplex cellular networks"

Connected through hyperedge HE-6 (induced by source paper "throughput analysis and optimization of wireless powered multiple antenna full duplex relay systems"):
  with members:
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "wireless information and power transfer in relay systems with multiple antennas and interference"
    - "harvest then cooperate wireless powered cooperative communications"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "cutting last wires for mobile communication by microwave power transfer"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "full duplex wireless powered relay with self energy recycling"

Connected through hyperedge HE-7 (induced by source paper "impact of directionality on interference mitigation in full duplex cellular network"):
  with members:
    - "passive loop interference suppression in large scale full duplex cellular networks"
    - "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"
    - "joint beamforming optimization and power control for full duplex mimo two way relay channel"
    - "outage analysis of full duplex architectures in cellular networks"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "passive self interference suppression for full duplex infrastructure nodes"

Connected through hyperedge HE-8 (induced by source paper "joint power and subcarrier allocation for multicarrier full duplex systems"):
  with members:
    - "power efficient resource allocation for mc noma with statistical channel state information"
    - "optimal joint power and subcarrier allocation for mc noma systems"
    - "on the spectral efficiency of massive mimo systems with low resolution adcs"
    - "robust resource allocation for full duplex cognitive radio systems"
    - "achievable rate of rician large scale mimo channels with transceiver hardware impairments"
    - "power efficient resource allocation for full duplex radio distributed antenna networks"
    - "secure massive mimo transmission with an active eavesdropper"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"

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)