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: "large system analysis of correlated mimo multiple access channels with arbitrary signaling in the presence of interference"
  Abstract: Presence of multiple antennas on both sides of a communication channel promises significant improvements in system throughput and power efficiency. In effect, a new class of large multiple-input multiple-output (MIMO) communication systems has recently emerged and attracted both scientific and industrial attention. To analyze these systems in realistic scenarios, one has to include such aspects as co-channel interference, multiple access and spatial correlation. In this paper, we study the properties of correlated MIMO multiple-access channels in the presence of external interference. Using the replica method from statistical physics, we derive the ergodic sum-rate of the communication for arbitrary signal constellations when the numbers of antennas at both ends of the channel grow large. Based on these asymptotic expressions, we also address the problem of sum-rate maximization using statistical channel information and linear precoding. The numerical results demonstrate that when the interfering terminals use discrete constellations, the resulting interference becomes easier to handle compared to Gaussian signals. Thus, it may be possible to accommodate more interfering transmitter-receiver pairs within the same area as compared to the case of Gaussian signals. In addition, we demonstrate numerically for the Gaussian and QPSK signaling schemes that it is possible to design precoder matrices that significantly improve the achievable rates at low-to-mid range of signal-to-noise ratios when compared to isotropic precoding.

Connected through hyperedge HE-1 (induced by source paper "on the spectral efficiency of noncooperative uplink massive mimo systems"):
  with members:
    - "massive mimo ten myths and one critical question"
    - "optimal user cell association for massive mimo wireless networks"
    - "massive mimo for maximal spectral efficiency how many users and pilots should be allocated"
    - "on the capacity of large mimo block fading channels"
    - "mutual information of iid complex gaussian signals on block rayleigh faded channels"
    - "pilot contamination and precoding in multi cell tdd systems"

Connected through hyperedge HE-2 (induced by source paper "downlink precoding for massive mimo systems exploiting virtual channel model sparsity"):
  with members:
    - "spatial temporal bem and channel estimation strategy for massive mimo time varying systems"
    - "low complexity mimo precoding with discrete signals and statistical csi"
    - "linear precoding for the mimo multiple access channel with finite alphabet inputs and statistical csi"
    - "kronecker product correlation model and limited feedback codebook design in a 3d channel model"
    - "joint spatial division and multiplexing for mm wave channels"
    - "a coordinated approach to channel estimation in large scale multiple antenna systems"
    - "energy and spectral efficiency of very large multiuser mimo systems"
    - "pilot contamination and precoding in multi cell tdd systems"

Connected through hyperedge HE-3 (induced by source paper "bayes optimal joint channel and data estimation for massive mimo with low precision adcs"):
  with members:
    - "mixed adc massive mimo"
    - "phase transitions and sample complexity in bayes optimal matrix factorization"
    - "mixed adc massive mimo detectors performance analysis and design optimization"
    - "low power analog to digital conversion in millimeter wave systems impact of resolution and bandwidth on performance"
    - "one bit massive mimo channel estimation and high order modulations"
    - "limited feedback in multiple antenna systems with one bit quantization"
    - "capacity analysis of one bit quantized mimo systems with transmitter channel state information"
    - "joint channel and data estimation for large mimo systems with low precision adcs"

Connected through hyperedge HE-4 (induced by source paper "asymptotic performance analysis of a k hop amplify and forward relay mimo channel"):
  with members:
    - "asymptotic analysis of su mimo channels with transmitter noise and mismatched joint decoding"
    - "asymptotic capacity and optimal precoding in mimo multi hop relay networks"
    - "ergodic capacity analysis of amplify and forward mimo dual hop systems"
    - "a typical reconstruction limit of compressed sensing based on lp norm minimization"
    - "tight bounds on the capacity of binary input random cdma systems"
    - "asymptotic analysis of general multiuser detectors in mimo ds cdma channels"
    - "vector precoding for wireless mimo systems and its replica analysis"
    - "asymptotic mutual information statistics of separately correlated rician fading mimo channels"

Connected through hyperedge HE-5 (induced by source paper "asymptotic optimality of massive mimo systems using densely spaced transmit antennas"):
  with members:
    - "blind pilot decontamination"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "on an achievable rate of large rayleigh block fading mimo channels with no csi"
    - "large system analysis of joint channel and data estimation for mimo ds cdma systems"
    - "a deterministic equivalent for the analysis of correlated mimo multiple access channels"
    - "asymptotic analysis of general multiuser detectors in mimo ds cdma channels"
    - "vector precoding for wireless mimo systems and its replica analysis"
    - "analysis of cdma systems that are characterized by eigenvalue spectrum"

Connected through hyperedge HE-6 (induced by source paper "joint channel and data estimation for large mimo systems with low precision adcs"):
  with members:
    - "phase transitions and sample complexity in bayes optimal matrix factorization"
    - "capacity analysis of one bit quantized mimo systems with transmitter channel state information"
    - "performance limits of massive mimo systems based on bayes optimal inference"
    - "bilinear generalized approximate message passing part i derivation"
    - "massive mimo for next generation wireless systems"
    - "what will 5g be"
    - "massive mimo with 1 bit adc"
    - "distributed reception with spatial multiplexing mimo systems for the internet of things"

Connected through hyperedge HE-7 (induced by source paper "linear precoding for the mimo multiple access channel with finite alphabet inputs and statistical csi"):
  with members:
    - "performance limits of massive mimo systems based on bayes optimal inference"
    - "massive mimo for next generation wireless systems"
    - "transmit designs for the mimo broadcast channel with statistical csi"
    - "a novel power allocation scheme for two user gmac with finite input constellations"
    - "linear precoder design for mimo interference channels with finite alphabet signaling"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "a deterministic equivalent for the analysis of correlated mimo multiple access channels"
    - "the dynamics of message passing on dense graphs with applications to compressed sensing"

Connected through hyperedge HE-8 (induced by source paper "asymptotic analysis of su mimo channels with transmitter noise and mismatched joint decoding"):
  with members:
    - "asymptotic performance analysis of a k hop amplify and forward relay mimo channel"
    - "analysis of regularized ls reconstruction and random matrix ensembles in compressed sensing"
    - "on the mimo capacity with residual transceiver hardware impairments"
    - "capacity limits and multiplexing gains of mimo channels with transceiver impairments"
    - "on an achievable rate of large rayleigh block fading mimo channels with no csi"
    - "a general framework for transmission with transceiver distortion and some applications"
    - "mimo transmission with residual transmit rf impairments"
    - "vector precoding for wireless mimo systems and its replica analysis"

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)