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: "cooperative non orthogonal multiple access with simultaneous wireless information and power transfer"
  Abstract: In this paper, the application of simultaneous wireless information and power transfer (SWIPT) to nonorthogonal multiple access (NOMA) networks in which users are spatially randomly located is investigated. A new co-operative SWIPT NOMA protocol is proposed, in which near NOMA users that are close to the source act as energy harvesting relays to help far NOMA users. Since the locations of users have a significant impact on the performance, three user selection schemes based on the user distances from the base station are proposed. To characterize the performance of the proposed selection schemes, closed-form expressions for the outage probability and system throughput are derived. These analytical results demonstrate that the use of SWIPT will not jeopardize the diversity gain compared to the conventional NOMA. The proposed results confirm that the opportunistic use of node locations for user selection can achieve low outage probability and deliver superior throughput in comparison to the random selection scheme.

Connected through hyperedge HE-1 (induced by source paper "mimo noma networks relying on reconfigurable intelligent surface a signal cancellation based design"):
  with members:
    - "intelligent reflecting surface assisted multiple access with user pairing noma or oma"
    - "enabling panoramic full angle reflection via aerial intelligent reflecting surface"
    - "performance analysis of intelligent reflecting surface assisted noma networks"
    - "miso wireless communication systems via intelligent reflecting surfaces"
    - "large intelligent surface antennas lisa making reflective radios smart"
    - "reflection probability in wireless networks with metasurface coated environmental objects an approach based on random spatial processes"
    - "capacity characterization for intelligent reflecting surface aided mimo communication"
    - "channel capacity optimization using reconfigurable intelligent surfaces in indoor mmwave environments"

Connected through hyperedge HE-2 (induced by source paper "on the performance of cooperative noma using mrc at road intersections in the presence of interference"):
  with members:
    - "outage analysis of cooperative noma using maximum ratio combining at intersections"
    - "performance analysis of cooperative communications at road intersections using stochastic geometry tools"
    - "vehicle to vehicle communications with urban intersection path loss models"
    - "relay selection for cooperative noma"
    - "on the outage probability of the full duplex interference limited relay channel"
    - "on the performance of non orthogonal multiple access in 5g systems with randomly deployed users"

Connected through hyperedge HE-3 (induced by source paper "clustered millimeter wave networks with non orthogonal multiple access"):
  with members:
    - "cache enabled hetnets with millimeter wave small cells"
    - "user association and resource allocation in unified noma enabled heterogeneous ultra dense networks"
    - "exploiting multiple access in clustered millimeter wave networks noma or oma"
    - "modeling and analysis of d2d millimeter wave networks with poisson cluster processes"
    - "optimal user scheduling and power allocation for millimeter wave noma systems"
    - "modeling and analyzing millimeter wave cellular systems"
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "non orthogonal multiple access in large scale heterogeneous networks"

Connected through hyperedge HE-4 (induced by source paper "exploiting noma for uav communications in large scale cellular networks"):
  with members:
    - "downlink non orthogonal multiple access noma in poisson networks"
    - "exploiting noma for multi beam uav communication in cellular uplink"
    - "user association and resource allocation in unified non orthogonal multiple access enabled heterogeneous ultra dense networks"
    - "connectivity and blockage effects in millimeter wave air to everything networks"
    - "uav aided offloading for cellular hotspot"
    - "modeling and analysis of two way relay non orthogonal multiple access systems"
    - "energy minimization for wireless communication with rotary wing uav"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"

Connected through hyperedge HE-5 (induced by source paper "uplink non orthogonal multiple access for uav communications"):
  with members:
    - "interference management for cellular connected uavs a deep reinforcement learning approach"
    - "energy minimization for wireless communication with rotary wing uav"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"
    - "uav enabled communication using noma"
    - "multiple antenna aided noma in uav networks a stochastic geometry approach"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "uplink cooperative noma for cellular connected uav"
    - "placement optimization of uav mounted mobile base stations"

Connected through hyperedge HE-6 (induced by source paper "non orthogonal multiple access for air to ground communication"):
  with members:
    - "interference management for cellular connected uavs a deep reinforcement learning approach"
    - "energy minimization for wireless communication with rotary wing uav"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"
    - "uav enabled communication using noma"
    - "multiple antenna aided noma in uav networks a stochastic geometry approach"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "uplink cooperative noma for cellular connected uav"
    - "placement optimization of uav mounted mobile base stations"

Connected through hyperedge HE-7 (induced by source paper "uav enabled iot systems noma or oma"):
  with members:
    - "3d trajectory optimization in rician fading for uav enabled data harvesting"
    - "optimal 3d trajectory design and resource allocation for solar powered uav communication systems"
    - "spectral and energy efficient wireless powered iot networks noma or tdma"
    - "energy minimization for wireless communication with rotary wing uav"
    - "multiple antenna aided noma in uav networks a stochastic geometry approach"
    - "uplink cooperative noma for cellular connected uav"
    - "placement optimization of uav mounted mobile base stations"
    - "joint trajectory and communication design for multi uav enabled wireless networks"

Connected through hyperedge HE-8 (induced by source paper "cooperative asynchronous non orthogonal multiple access with power minimization under qos constraints"):
  with members:
    - "an analysis of two user uplink asynchronous non orthogonal multiple access systems"
    - "exploiting full half duplex user relaying in noma systems"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "outage performance for cooperative noma transmission with an af relay"
    - "wireless network level partial relay cooperation a stable throughput analysis"
    - "interference mitigation using asynchronous transmission and sampling diversity"
    - "asynchronous orthogonal differential decoding for multiple access channels"
    - "distributed beamforming in wireless multiuser relay interference networks with quantized feedback"

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)