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: "a deterministic equivalent for the analysis of correlated mimo multiple access channels"
  Abstract: In this article, novel deterministic equivalents for the Stieltjes transform and the Shannon transform of a class of large dimensional random matrices are provided. These results are used to characterize the ergodic rate region of multiple antenna multiple access channels, when each point-to-point propagation channel is modelled according to the Kronecker model. Specifically, an approximation of all rates achieved within the ergodic rate region is derived and an approximation of the linear precoders that achieve the boundary of the rate region as well as an iterative water-filling algorithm to obtain these precoders are provided. An original feature of this work is that the proposed deterministic equivalents are proved valid even for strong correlation patterns at both communication sides. The above results are validated by Monte Carlo simulations.

Connected through hyperedge HE-1 (induced by source paper "asymptotic analysis of rzf over double scattering channels with mmse estimation"):
  with members:
    - "massive mimo has unlimited capacity"
    - "multi cell massive mimo performance with double scattering channels"
    - "no downlink pilots are needed in tdd massive mimo"
    - "linear precoding based on polynomial expansion large scale multi cell mimo systems"
    - "a coordinated approach to channel estimation in large scale multiple antenna systems"
    - "achieving massive mimo spectral efficiency with a not so large number of antennas"
    - "random beamforming over quasi static and fading channels a deterministic equivalent approach"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"

Connected through hyperedge HE-2 (induced by source paper "uplink performance of multi antenna cellular networks with co operative base stations and user centric clustering"):
  with members:
    - "ergodic spectral efficiency in mimo cellular networks"
    - "on a user centric base station cooperation scheme for reliable communications"
    - "full duplex cloud ran with uplink downlink remote radio head association"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "cooperative base station coloring for pair wise multi cell coordination"
    - "the world s first real time testbed for massive mimo design implementation and validation"
    - "uplink and downlink rate analysis of a full duplex c ran with radio remote head association"
    - "distributed massive mimo in cellular networks impact of imperfect hardware and number of oscillators"

Connected through hyperedge HE-3 (induced by source paper "free deterministic equivalents for the analysis of mimo multiple access channel"):
  with members:
    - "channel acquisition for massive mimo ofdm with adjustable phase shift pilots"
    - "an overview of transmission theory and techniques of large scale antenna systems for 5g wireless communications"
    - "secure massive mimo transmission with an active eavesdropper"
    - "pilot reuse for massive mimo transmission over spatially correlated rayleigh fading channels"
    - "joint power and antenna selection optimization in large cloud radio access networks"
    - "pilot beam pattern design for channel estimation in massive mimo systems"
    - "massive mimo for next generation wireless systems"
    - "on capacity of large scale mimo multiple access channels with distributed sets of correlated antennas"

Connected through hyperedge HE-4 (induced by source paper "asymptotic optimality of massive mimo systems using densely spaced transmit antennas"):
  with members:
    - "blind pilot decontamination"
    - "large system analysis of correlated mimo multiple access channels with arbitrary signaling in the presence of interference"
    - "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"
    - "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-5 (induced by source paper "backing off from infinity performance bounds via concentration of spectral measure for random mimo channels"):
  with members:
    - "massive mimo for next generation wireless systems"
    - "bounds on the second order coding rate of the mimo rayleigh block fading channel"
    - "shannon meets nyquist capacity of sampled gaussian channels"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "on the distribution of mimo mutual information an in depth painleve based characterization"
    - "outage capacity for the optical mimo channel"
    - "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"

Connected through hyperedge HE-6 (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"
    - "large system analysis of correlated mimo multiple access channels with arbitrary signaling in the presence of interference"
    - "linear precoder design for mimo interference channels with finite alphabet signaling"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "the dynamics of message passing on dense graphs with applications to compressed sensing"

Connected through hyperedge HE-7 (induced by source paper "heterogeneous cellular networks using wireless backhaul fast admission control and large system analysis"):
  with members:
    - "5g wireless backhaul networks challenges and research advances"
    - "what will 5g be"
    - "group sparse beamforming for green cloud ran"
    - "joint beamforming and power control in coordinated multicell max min duality effective network and large system transition"
    - "joint precoding and multivariate backhaul compression for the downlink of cloud radio access networks"
    - "millimeter wave beamforming for wireless backhaul and access in small cell networks"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "uplink multicell processing with limited backhaul via per base station successive interference cancellation"

Connected through hyperedge HE-8 (induced by source paper "on the capacity of block multiantenna channels"):
  with members:
    - "massive mimo for next generation wireless systems"
    - "asymptotic capacity and optimal precoding in mimo multi hop relay networks"

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)