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 backscatter interference networks based on time hopping spread spectrum"
  Abstract: Future Internet-of-Things (IoT) is expected to wirelessly connect billions of low-complexity devices. For wireless information transfer (WIT) in IoT, high density of IoT devices and their ad hoc communication result in strong interference which acts as a bottleneck on WIT. Furthermore, battery replacement for the massive number of IoT devices is difficult if not infeasible, making wireless energy transfer (WET) desirable. This motivates: (i) the design of full-duplex WIT to reduce latency and enable efficient spectrum utilization, and (ii) the implementation of passive IoT devices using backscatter antennas that enable WET from one device (reader) to another (tag). However, the resultant increase in the density of simultaneous links exacerbates the interference issue. This issue is addressed in this paper by proposing the design of full-duplex backscatter communication (BackCom) networks, where a novel multiple-access scheme based on time-hopping spread-spectrum (TH-SS) is designed to enable both one-way WET and two-way WIT in coexisting backscatter reader-tag links. Comprehensive performance analysis of BackCom networks is presented in this paper, including forward/backward bit-error rates and WET efficiency and outage probabilities, which accounts for energy harvesting at tags, non-coherent and coherent detection at tags and readers, respectively, and the effects of asynchronous transmissions.

Connected through hyperedge HE-1 (induced by source paper "backscatter data collection with unmanned ground vehicle mobility management and power allocation"):
  with members:
    - "energy constrained uav trajectory design for ground node localization"
    - "resource allocation for solar powered uav communication systems"
    - "aerial anchors positioning for reliable rss based outdoor localization in urban environments"
    - "wirelessly powered backscatter communications waveform design and snr energy tradeoff"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "inference from randomized transmissions by many backscatter sensors"
    - "multistatic scatter radio sensor networks for extended coverage"

Connected through hyperedge HE-2 (induced by source paper "a survey of electromagnetic side channel attacks and discussion on their case progressing potential for digital forensics"):
  with members:
    - "systematic classification of side channel attacks a case study for mobile devices"
    - "watch me but don t touch me contactless control flow monitoring via electromagnetic emanations"
    - "evaluation of digital forensic process models with respect to digital forensics as a service"
    - "current challenges and future research areas for digital forensic investigation"

Connected through hyperedge HE-3 (induced by source paper "hybrid beamformer design for high dynamic range ambient backscatter receivers"):
  with members:
    - "backscatter multiplicative multiple access systems fundamental limits and practical design"
    - "fm backscatter enabling connected cities and smart fabrics"
    - "modulation in the air backscatter communication over ambient ofdm carrier"

Connected through hyperedge HE-4 (induced by source paper "wireless powered asynchronous backscatter networks with sporadic short packets performance analysis and optimization"):
  with members:
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "physical layer security in mimo backscatter wireless systems"
    - "some new research trends in wirelessly powered communications"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"
    - "wireless powered communication opportunities and challenges"
    - "a stochastic geometry framework for asynchronous full duplex networks"

Connected through hyperedge HE-5 (induced by source paper "novel sparse coded ambient backscatter communication for massive iot connectivity"):
  with members:
    - "cooperative ambient backscatter communications for green internet of things"
    - "retrodirective large antenna energy beamforming in backscatter multi user networks"
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "inference from randomized transmissions by many backscatter sensors"
    - "modulation and multiple access for 5g networks"
    - "modulation in the air backscatter communication over ambient ofdm carrier"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"
    - "cooperative non orthogonal multiple access with simultaneous wireless information and power transfer"

Connected through hyperedge HE-6 (induced by source paper "ambient backscatter communications a contemporary survey"):
  with members:
    - "cooperative ambient backscatter communications for green internet of things"
    - "pixelated vlc backscattering for self charging indoor iot devices"
    - "wirelessly powered backscatter communications waveform design and snr energy tradeoff"
    - "lora backscatter enabling the vision of ubiquitous connectivity"
    - "backscatter communications for internet of things theory and applications"
    - "ambient backscatter networking a novel paradigm to assist wireless powered communications"
    - "backscatter multiplicative multiple access systems fundamental limits and practical design"
    - "scatter radio receivers for extended range environmental sensing wsns"

Connected through hyperedge HE-7 (induced by source paper "backscatter communications for the internet of things a stochastic geometry approach"):
  with members:
    - "backscatter communications for internet of things theory and applications"
    - "multistatic scatter radio sensor networks for extended coverage"
    - "joint uplink and downlink coverage analysis of cellular based rf powered iot network"
    - "backscatter communications for wireless powered sensor networks with collision resolution"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"
    - "modulation in the air backscatter communication over ambient ofdm carrier"
    - "waveform design for wireless power transfer"

Connected through hyperedge HE-8 (induced by source paper "design of non orthogonal multiple access enhanced backscatter communication"):
  with members:
    - "spectral and energy efficient wireless powered iot networks noma or tdma"
    - "massive non orthogonal multiple access for cellular iot potentials and limitations"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "inference from randomized transmissions by many backscatter sensors"
    - "backscatter communications for wireless powered sensor networks with collision resolution"
    - "modulation in the air backscatter communication over ambient ofdm carrier"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "wireless powered communications with non orthogonal multiple access"

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)