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: "effective capacity of licensed assisted access in unlicensed spectrum for 5g from theory to application"
  Abstract: License-assisted access (LAA) is a promising technology to offload dramatically increasing cellular traffic to unlicensed bands. Challenges arise from the provision of quality-of-service (QoS) and the quantification of capacity, due to the distributed and heterogeneous nature of LAA and legacy systems (such as WiFi) coexisting in the bands. In this paper, we develop new theories of the effective capacity to measure LAA under statistical QoS requirements. A new four-state semi-Markovian model is developed to capture transmission collisions, random backoffs, and lossy wireless channels of LAA in distributed heterogeneous network environments. A closed-form expression for the effective capacity is derived to comprehensively analyze LAA. The four-state model is further abstracted to an insightful two-state equivalent which reveals the concavity of the effective capacity in terms of transmit rate. Validated by simulations, the concavity is exploited to maximize the effective capacity and effective energy efficiency of LAA, and provide significant improvements of 62.7% and 171.4%, respectively, over existing approaches. Our results are of practical value to holistic designs and deployments of LAA systems.

Connected through hyperedge HE-1 (induced by source paper "energy efficient transmission of hybrid array with non ideal power amplifiers and circuitry"):
  with members:
    - "energy efficient transceiver design for hybrid sub array architecture mimo systems"
    - "resolution adaptive hybrid mimo architectures for millimeter wave communications"
    - "energy efficiency maximization of full duplex two way relay with non ideal power amplifiers and non negligible circuit power"
    - "hybrid beamforming for large antenna arrays with phase shifter selection"
    - "an overview of signal processing techniques for millimeter wave mimo systems"
    - "dynamic subarrays for hybrid precoding in wideband mmwave mimo systems"
    - "deploying dense networks for maximal energy efficiency small cells meet massive mimo"
    - "channel estimation and hybrid precoding for millimeter wave cellular systems"

Connected through hyperedge HE-2 (induced by source paper "game theoretic optimization for machine type communications under qos guarantee"):
  with members:
    - "effective capacity analysis in ultra dense wireless networks with random interference"
    - "on the reliability of lte random access performance bounds for machine to machine burst resolution time"
    - "on the effective capacity of mtc networks in the finite blocklength regime"
    - "caching in the sky proactive deployment of cache enabled unmanned aerial vehicles for optimized quality of experience"

Connected through hyperedge HE-3 (induced by source paper "distributed layered grant free non orthogonal multiple access for massive mtc"):
  with members:
    - "noma based random access with multichannel aloha"
    - "on optimal power allocation for downlink non orthogonal multiple access systems"
    - "power and channel allocation for non orthogonal multiple access in 5g systems tractability and computation"
    - "fundamentals of throughput maximization with random arrivals for m2m communications"

Connected through hyperedge HE-4 (induced by source paper "energy efficiency maximization for comp joint transmission with non ideal power amplifiers"):
  with members:
    - "energy efficiency maximization of full duplex two way relay with non ideal power amplifiers and non negligible circuit power"
    - "deploying dense networks for maximal energy efficiency small cells meet massive mimo"
    - "fundamental limits of cooperation"

Connected through hyperedge HE-5 (induced by source paper "effective capacity analysis in ultra dense wireless networks with random interference"):
  with members:
    - "sinr and throughput scaling in ultradense urban cellular networks"
    - "throughput and energy efficiency analysis of small cell networks with multi antenna base stations"
    - "downlink capacity and base station density in cellular networks"

Connected through hyperedge HE-6 (induced by source paper "optimal scheduling across heterogeneous air interfaces of lte wifi aggregation"):
  with members:
    - "delay constrained video transmission quality driven resource allocation and scheduling"

Connected through hyperedge HE-7 (induced by source paper "energy efficient user access control and resource allocation in hcns with non ideal circuitry"):
  with members:
    - "energy efficiency maximization of full duplex two way relay with non ideal power amplifiers and non negligible circuit power"
    - "user association in 5g networks a survey and an outlook"
    - "deploying dense networks for maximal energy efficiency small cells meet massive mimo"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "fundamental limits of cooperation"

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)