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: "capacity bounds for mimo microwave backhaul links affected by phase noise"
  Abstract: We present bounds and a closed-form high-SNR expression for the capacity of multiple-antenna systems affected by Wiener phase noise. Our results are developed for the scenario where a single oscillator drives all the radio-frequency circuitries at each transceiver (common oscillator setup), the input signal is subject to a peak-power constraint, and the channel matrix is deterministic. This scenario is relevant for line-of-sight multiple-antenna microwave backhaul links with sufficiently small antenna spacing at the transceivers. For the 2x 2 multiple-antenna case, for a Wiener phase-noise process with standard deviation equal to 6^°, and at the medium/high SNR values at which microwave backhaul links operate, the upper bound reported in the paper exhibits a 3\dB gap from a lower bound obtained using 64-QAM. Furthermore, in this SNR regime the closed-form high-SNR expression is shown to be accurate.

Connected through hyperedge HE-1 (induced by source paper "models and information rates for wiener phase noise channels"):
  with members:
    - "lower bound on the capacity of continuous time wiener phase noise channels"
    - "upper bound on the capacity of discrete time wiener phase noise channels"
    - "oversampling increases the pre log of noncoherent rayleigh fading channels"
    - "on continuous time white phase noise channels"
    - "phase modulation for discrete time wiener phase noise channels with oversampling at high snr"
    - "multi sample receivers increase information rates for wiener phase noise channels"
    - "on wiener phase noise channels at high signal to noise ratio"
    - "calculation of mutual information for partially coherent gaussian channels with applications to fiber optics"

Connected through hyperedge HE-2 (induced by source paper "an approximate ml detector for mimo channels corrupted by phase noise"):
  with members:
    - "models and information rates for wiener phase noise channels"
    - "constellation optimization in the presence of strong phase noise"
    - "dmt optimality of lr aided linear decoders for a general class of channels lattice designs and system models"

Connected through hyperedge HE-3 (induced by source paper "ml detection in phase noise impaired simo channels with uplink training"):
  with members:
    - "optimal detection in training assisted simo systems with phase noise impairments"
    - "capacity of simo and miso phase noise channels with common separate oscillators"
    - "uplink performance of time reversal mrc in massive mimo systems subject to phase noise"
    - "distributed massive mimo in cellular networks impact of imperfect hardware and number of oscillators"
    - "massive mimo with non ideal arbitrary arrays hardware scaling laws and circuit aware design"
    - "massive mimo systems with non ideal hardware energy efficiency estimation and capacity limits"
    - "calculation of the performance of communication systems from measured oscillator phase noise"
    - "massive mimo for next generation wireless systems"

Connected through hyperedge HE-4 (induced by source paper "on the multiplexing gain of discrete time mimo phase noise channels"):
  with members:
    - "models and information rates for wiener phase noise channels"
    - "capacity of simo and miso phase noise channels with common separate oscillators"
    - "on wiener phase noise channels at high signal to noise ratio"

Connected through hyperedge HE-5 (induced by source paper "performance evaluation of los mimo systems under the influence of phase noise"):
  with members:
    - "calculation of the performance of communication systems from measured oscillator phase noise"
    - "capacity limits and multiplexing gains of mimo channels with transceiver impairments"

Connected through hyperedge HE-6 (induced by source paper "on the multiplexing gain of mimo phase noise channels"):
  with members:
    - "capacity of simo and miso phase noise channels with common separate oscillators"

Connected through hyperedge HE-7 (induced by source paper "massive mimo with non ideal arbitrary arrays hardware scaling laws and circuit aware design"):
  with members:
    - "capacity of simo and miso phase noise channels with common separate oscillators"
    - "uplink performance of time reversal mrc in massive mimo systems subject to phase noise"
    - "massive mimo performance evaluation based on measured propagation data"
    - "optimal multiuser transmit beamforming a difficult problem with a simple solution structure"
    - "on the impact of oscillator phase noise on the uplink performance in a massive mimo ofdm system"
    - "filter bank multicarrier for massive mimo"
    - "massive mimo systems with non ideal hardware energy efficiency estimation and capacity limits"
    - "massive mimo for next generation wireless systems"

Connected through hyperedge HE-8 (induced by source paper "on the capacity of the wiener phase noise channel bounds and capacity achieving distributions"):
  with members:
    - "capacity of simo and miso phase noise channels with common separate oscillators"
    - "on the impact of oscillator phase noise on the uplink performance in a massive mimo ofdm system"
    - "massive mimo systems with non ideal hardware energy efficiency estimation and capacity limits"
    - "calculation of the performance of communication systems from measured oscillator phase noise"
    - "improving bandwidth efficiency in e band communication systems"
    - "oscillator phase noise and small scale channel fading in higher frequency bands"
    - "analysis of oscillator phase noise effects on self interference cancellation in full duplex ofdm radio transceivers"
    - "on continuous time white phase noise channels"

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)