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: "on the mutual information distribution of ofdm based spatial multiplexing exact variance and outage approximation"
  Abstract: This communication considers the distribution of the mutual information of frequency-selective spatially uncorrelated Rayleigh fading multiple-input-multiple-output (MIMO) channels. Results are presented for orthogonal frequency-division multiplexing (OFDM)-based spatial multiplexing. New exact closed-form expressions are derived for the variance of the mutual information. In contrast to previous results, our new expressions apply for systems with both arbitrary numbers of antennas and arbitrary-length channels. Simplified expressions are also presented for high and low signal-to-noise ratio (SNR) regimes. The analytical variance results are used to provide accurate analytical approximations for the distribution of the mutual information, and the outage capacity.

Connected through hyperedge HE-1 (induced by source paper "delay performance of miso wireless communications"):
  with members:
    - "unified framework for the effective rate analysis of wireless communication systems over miso fading channels"
    - "analysis of wireless communications with finite blocklength and imperfect channel knowledge"
    - "on the delay performance of interference channels"
    - "large deviation delay analysis of queue aware multi user mimo systems with two timescale mobile driven feedback"
    - "delay constrained throughput analysis of a correlated mimo wireless channel"
    - "on the flow level delay of a spatial multiplexing mimo wireless channel"
    - "information spectrum approach to second order coding rate in channel coding"
    - "mimo wireless communications under statistical queueing constraints"

Connected through hyperedge HE-2 (induced by source paper "stable wireless network control under service constraints"):
  with members:
    - "autonomous algorithms for centralized and distributed interference coordination a virtual layer based approach"
    - "stability and cost optimization in controlled random walks using scheduling fields"
    - "a fundamental characterization of stability in broadcast queueing systems"

Connected through hyperedge HE-3 (induced by source paper "eigenvalue dynamics of a central wishart matrix with application to mimo systems"):
  with members:
    - "distribution of the largest eigenvalue for real wishart and gaussian random matrices and a simple approximation for the tracy widom distribution"
    - "massive mimo for next generation wireless systems"
    - "on the bivariate nakagami m cumulative distribution function closed form expression and applications"
    - "on the distribution of mimo mutual information an in depth painleve based characterization"
    - "mimo multichannel beamforming ser and outage using new eigenvalue distributions of complex noncentral wishart matrices"

Connected through hyperedge HE-4 (induced by source paper "performance analysis of heterogeneous feedback design in an ofdma downlink with partial and imperfect feedback"):
  with members:
    - "sum rate analysis of a reduced feedback ofdma downlink system employing joint scheduling and diversity"
    - "design and analysis of multi user sdma systems with noisy limited csit feedback"
    - "limited feedback for temporally correlated mimo channels with other cell interference"

Connected through hyperedge HE-5 (induced by source paper "perturbed hankel determinants applications to the information theory of mimo wireless communications"):
  with members:
    - "living at the edge a large deviations approach to the outage mimo capacity"
    - "statistical eigenmode transmission over jointly correlated mimo channels"

Connected through hyperedge HE-6 (induced by source paper "achievable sum rate of mimo mmse recievers a general analytic framework"):
  with members:
    - "ergodic capacity analysis of amplify and forward mimo dual hop systems"
    - "maximum sum rate of mimo multiuser scheduling with linear receivers"
    - "asymptotic performance of linear receivers in mimo fading channels"
    - "performance of mmse mimo receivers a large n analysis for correlated channels"
    - "capacity and character expansions moment generating function and other exact results for mimo correlated channels"
    - "on the outage capacity of correlated multiple path mimo channels"

Connected through hyperedge HE-7 (induced by source paper "coding versus arq in fading channels how reliable should the phy be"):
  with members:
    - "throughput analysis of buffer constrained wireless systems in the finite blocklength regime"
    - "performance of hybrid arq in block fading channels a fixed outage probability analysis"

Connected through hyperedge HE-8 (induced by source paper "performance of hybrid arq in block fading channels a fixed outage probability analysis"):
  with members:
    - "coding versus arq in fading channels how reliable should the phy be"
    - "on the throughput of secure hybrid arq protocols for gaussian block fading channels"
    - "optimal throughput diversity delay tradeoff in mimo arq block fading 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)