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: "energy recycling full duplex radios for next generation networks"
  Abstract: In this work, a novel energy-recycling single-antenna full-duplex (FD) radio is designed, in which a new three-port element including a power divider and an energy harvester is added between the circulator and the receiver (RX) chain. The presence of this new element brings advantages over the state of the art in terms of both spectral efficiency and energy consumption. In particular, it provides the means of performing both an arbitrary attenuation of the incoming signal, which in turn increases the effectiveness of the state-of-the-art self-interference cancellation strategies subsequently adopted in the RX chain, and the recycling of a non-negligible portion of the energy leaked through the nonideal circulator. The performance of this architecture is analyzed in a practically relevant four-node scenario in which two nodes operate in FD and two nodes in half-duplex (HD). Analytical approximations are derived for both the achievable rates of the transmissions performed by the FD and HD radios and the energy recycled by the FD radios. The accuracy of these derivations is confirmed by numerical simulations. Quantitatively, achievable rate gains up to 40% over the state-of-the-art alternatives, in the considered scenario, are highlighted. Furthermore, up to 50% of the leaked energy at the circulator, i.e., 5% of the energy of the transmitted signal, can be recycled.

Connected through hyperedge HE-1 (induced by source paper "massive wireless energy transfer enabling sustainable iot towards 6g era"):
  with members:
    - "rate control for wireless powered communication network with reliability and delay constraints"
    - "statistical analysis of multiple antenna strategies for wireless energy transfer"
    - "wireless powered communication networks an overview"
    - "wireless powered communication opportunities and challenges"
    - "throughput maximization in wireless powered communication networks"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-2 (induced by source paper "is self interference in full duplex communications a foe or a friend"):
  with members:
    - "energy efficient power control a look at 5g wireless technologies"
    - "wireless powered communication opportunities and challenges"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "full duplex wireless powered relay with self energy recycling"
    - "wireless information and power transfer with full duplex relaying"
    - "fast converging algorithm for weighted sum rate maximization in multicell miso downlink"
    - "robust monotonic optimization framework for multicell miso systems"

Connected through hyperedge HE-3 (induced by source paper "fundamental green tradeoffs progresses challenges and impacts on 5g networks"):
  with members:
    - "spectrum power trading for energy efficient small cell"
    - "power efficient resource allocation for full duplex radio distributed antenna networks"
    - "energy efficient resource allocation for wireless powered communication networks"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "hybrid millimeter wave systems a novel paradigm for hetnets"
    - "coexistence of wi fi and heterogeneous small cell networks sharing unlicensed spectrum"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "filter bank multicarrier for massive mimo"

Connected through hyperedge HE-4 (induced by source paper "capacity of a full duplex wirelessly powered communication system with self interference and processing cost"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "capacity region of gaussian multiple access channels with energy harvesting and energy cooperation"
    - "capacity analysis of discrete energy harvesting channels"
    - "capacity of the energy harvesting gaussian mac"
    - "capacity of the two hop relay channel with wireless energy transfer from relay to source and energy transmission cost"
    - "weighted sum transmit power minimization for full duplex system with swipt and self energy recycling"
    - "capacity of the energy harvesting channel with a finite battery"
    - "capacity of the gaussian two hop full duplex relay channel with residual self interference"

Connected through hyperedge HE-5 (induced by source paper "cache aided full duplex small cells"):
  with members:
    - "effect of user mobility on the performance of device to device networks with distributed caching"
    - "wireless caching technical misconceptions and business barriers"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "optimal low complexity self interference cancellation for full duplex mimo small cells"
    - "optimization and analysis of probabilistic caching in n tier heterogeneous networks"
    - "mean field games for distributed caching in ultra dense small cell networks"
    - "full duplex mimo small cell networks with interference cancellation"
    - "interference cancellation at receivers in cache enabled wireless networks"

Connected through hyperedge HE-6 (induced by source paper "accumulate and jam towards secure communication via a wireless powered full duplex jammer"):
  with members:
    - "distributed multi relay selection in accumulate then forward energy harvesting relay networks"
    - "throughput analysis and optimization of wireless powered multiple antenna full duplex relay systems"
    - "to harvest and jam a paradigm of self sustaining friendly jammers for secure af relaying"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "multi antenna relay aided wireless physical layer security"
    - "multiuser mimo wireless energy transfer with coexisting opportunistic communication"
    - "harvest then cooperate wireless powered cooperative communications"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"

Connected through hyperedge HE-7 (induced by source paper "optimal low complexity self interference cancellation for full duplex mimo small cells"):
  with members:
    - "all digital self interference cancellation technique for full duplex systems"
    - "full duplex mimo small cell networks performance analysis"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless 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)