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: "the effects of limited channel knowledge on cognitive radio system capacity"
  Abstract: We examine the impact of limited channel knowledge on the secondary user (SU) in a cognitive radio system. Under a minimum signal-to-interference noise ratio (SINR) constraint for the primary user (PU) receiver, we determine the SU capacity under five channel knowledge scenarios. We derive analytical expressions for the capacity cumulative distribution functions and the probability of SU blocking as a function of allowable interference. We show that imperfect knowledge of the PU-PU link gain by the SU-Tx often prohibits SU transmission or necessitates a high interference level at the PU. We also show that errored knowledge of the PU-PU channel is more beneficial than statistical channel knowledge and that imperfect knowledge of the SU-Tx to PU-Rx link has limited impact on SU capacity.

Connected through hyperedge HE-1 (induced by source paper "transmit power policy and ergodic multicast rate analysis of cognitive radio networks in generalized fading"):
  with members:
    - "asymptotic performance analysis of generalized user selection for interference limited multiuser secondary networks"
    - "asymptotic maximal order statistic for sir in κ μ shadowed fading"
    - "mimo underlay cognitive radio optimized power allocation effective number of transmit antennas and harvest transmit tradeoff"
    - "error vector magnitude analysis in generalized fading with co channel interference"
    - "outage probability and rate for kappa mu shadowed fading in interference limited scenario"
    - "coverage analysis in downlink poisson cellular network with kappa mu shadowed fading"
    - "relay selection improves the security reliability trade off in cognitive radio systems"
    - "spectrum sharing multi hop cooperative relaying performance analysis using extreme value theory"

Connected through hyperedge HE-2 (induced by source paper "mimo underlay cognitive radio optimized power allocation effective number of transmit antennas and harvest transmit tradeoff"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "jointly optimal spatial channel assignment and power allocation for mimo swipt systems"
    - "optimal power allocation and active interference mitigation for spatial multiplexed mimo cognitive systems"
    - "simultaneous spectrum sensing and data reception for cognitive spatial multiplexing distributed systems"
    - "full duplex mimo small cell networks with interference cancellation"
    - "practical non linear energy harvesting model and resource allocation for swipt systems"
    - "energy efficiency in massive mimo based 5g networks opportunities and challenges"
    - "full duplex wireless powered relay with self energy recycling"

Connected through hyperedge HE-3 (induced by source paper "cognitive mimo rf fso cooperative relay communication with mobile nodes and imperfect channel state information"):
  with members:
    - "performance analysis of project and forward relaying in mixed mimo pinhole and rayleigh dual hop channel"
    - "impact of pointing errors on the performance of mixed rf fso dual hop transmission systems"
    - "a new formula for the ber of binary modulations with dual branch selection over generalized k"

Connected through hyperedge HE-4 (induced by source paper "interference aided energy harvesting cognitive relaying with multiple primary transceivers"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "wireless energy harvesting in a cognitive relay network"
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "optimal time sharing in underlay cognitive radio systems with rf energy harvesting"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "wireless powered communications performance analysis and optimization"
    - "interference assisted wireless energy harvesting in cognitive relay network with multiple primary transceivers"
    - "outage analysis of spectrum sharing energy harvesting cognitive relays in nakagami m channels"

Connected through hyperedge HE-5 (induced by source paper "on the performance analysis of underlay cognitive radio systems a deployment perspective"):
  with members:
    - "sensing throughput tradeoff for interweave cognitive radio system a deployment centric viewpoint"
    - "estimation throughput tradeoff for underlay cognitive radio systems"
    - "a unified framework for the ergodic capacity of spectrum sharing cognitive radio systems"
    - "optimal power allocation for fading channels in cognitive radio networks ergodic capacity and outage capacity"
    - "channel capacity limits of cognitive radio in asymmetric fading environments"

Connected through hyperedge HE-6 (induced by source paper "interference assisted wireless energy harvesting in cognitive relay network with multiple primary transceivers"):
  with members:
    - "wireless powered relays in cooperative communications time switching relaying protocols and throughput analysis"
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "outage analysis of spectrum sharing energy harvesting cognitive relays in nakagami m channels"
    - "harvest then cooperate wireless powered cooperative communications"
    - "information and energy cooperation in cognitive radio networks"
    - "energy harvesting cognitive radio with channel aware sensing strategy"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "power allocation strategies in energy harvesting wireless cooperative networks"

Connected through hyperedge HE-7 (induced by source paper "on the secrecy of the cognitive interference channel with partial channel states"):
  with members:
    - "capacity theorems for the cognitive radio channel with confidential messages"
    - "inner and outer bounds for the gaussian cognitive interference channel and new capacity results"
    - "secret key agreement with channel state information at the transmitter"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "on the capacity of interference channels with one cooperating transmitter"
    - "cognitive radio an information theoretic perspective"

Connected through hyperedge HE-8 (induced by source paper "solutions to integrals involving the marcum q function and applications"):
  with members:
    - "analytic solutions to a marcum q function based integral and application in energy detection of unknown signals over multipath fading channels"
    - "the area under a receiver operating characteristic curve over enriched multipath fading conditions"
    - "novel expressions for the rice ie function and the incomplete lipschitz hankel integrals"
    - "analytic performance evaluation of underlay relay cognitive networks with channel estimation errors"
    - "analytic expressions and bounds for special functions and applications in communication theory"

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)