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: "maximum sum rate of mimo multiuser scheduling with linear receivers"
  Abstract: We analyze scheduling algorithms for multiuser communication systems with users having multiple antennas and linear receivers. When there is no feedback of channel information, we consider a common round robin scheduling algorithm, and derive new exact and high signal-to-noise ratio (SNR) maximum sum-rate results for the maximum ratio combining (MRC) and minimum mean squared error (MMSE) receivers. We also present new analysis of MRC, zero forcing (ZF) and MMSE receivers in the low SNR regime. When there are limited feedback capabilities in the system, we consider a common practical scheduling scheme based on signal-to-interference- and-noise ratio (SINR) feedback at the transmitter. We derive new accurate approximations for the maximum sum-rate, for the cases of MRC, ZF and MMSE receivers. We also derive maximum sum-rate scaling laws, which reveal that the maximum sum-rate of all three linear receivers converge to the same value for a large number of users, but at different rates.

Connected through hyperedge HE-1 (induced by source paper "on the throughput of large but finite mimo networks using schedulers"):
  with members:
    - "tomlinson harashima precoding for multiuser mimo systems with quantized csi feedback and user scheduling"
    - "network mimo with linear zero forcing beamforming large system analysis impact of channel estimation and reduced complexity scheduling"
    - "multi user mimo scheduling in the fourth generation cellular uplink"
    - "multi cell mimo downlink with cell cooperation and fair scheduling a large system limit analysis"
    - "user scheduling for heterogeneous multiuser mimo systems a subspace viewpoint"
    - "sum rates rate allocation and user scheduling for multi user mimo vector perturbation precoding"

Connected through hyperedge HE-2 (induced by source paper "impact of residual transmit rf impairments on training based mimo systems"):
  with members:
    - "pilot beam pattern design for channel estimation in massive mimo systems"
    - "massive mimo systems with non ideal hardware energy efficiency estimation and capacity limits"
    - "on the mimo capacity with residual transceiver hardware impairments"
    - "capacity bounds for mimo microwave backhaul links affected by phase noise"
    - "downlink training techniques for fdd massive mimo systems open loop and closed loop training with memory"
    - "on the impact of hardware impairments on massive mimo"
    - "two way relaying under the presence of relay transceiver hardware impairments"
    - "capacity limits and multiplexing gains of mimo channels with transceiver impairments"

Connected through hyperedge HE-3 (induced by source paper "performance analysis of massive mimo for cell boundary users"):
  with members:
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "network mimo with linear zero forcing beamforming large system analysis impact of channel estimation and reduced complexity scheduling"
    - "achieving massive mimo spectral efficiency with a not so large number of antennas"
    - "energy and spectral efficiency of very large multiuser mimo systems"
    - "pilot contamination and precoding in multi cell tdd systems"
    - "multiuser mimo achievable rates with downlink training and channel state feedback"

Connected through hyperedge HE-4 (induced by source paper "dynamic channel acquisition in mu mimo"):
  with members:
    - "achievable rates of fdd massive mimo systems with spatial channel correlation"
    - "network mimo with linear zero forcing beamforming large system analysis impact of channel estimation and reduced complexity scheduling"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "multi cell mimo downlink with cell cooperation and fair scheduling a large system limit analysis"
    - "mimo downlink scheduling with non perfect channel state knowledge"
    - "training and feedback optimization for multiuser mimo downlink"
    - "multiuser mimo achievable rates with downlink training and channel state feedback"

Connected through hyperedge HE-5 (induced by source paper "open loop spatial multiplexing and diversity communications in ad hoc networks"):
  with members:
    - "transmission capacity of ad hoc networks with multiple antennas using transmit stream adaptation and interference cancelation"
    - "spatial interference cancellation for multi antenna mobile ad hoc networks"
    - "transmission capacity of ad hoc networks with spatial diversity"
    - "the effect of fading channel inversion and threshold scheduling on ad hoc networks"

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"
    - "asymptotic performance of linear receivers in mimo fading channels"
    - "performance of mmse mimo receivers a large n analysis for correlated channels"
    - "on the mutual information distribution of ofdm based spatial multiplexing exact variance and outage approximation"
    - "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"

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)