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: "rate region frontiers for n user interference channel with interference as noise"
  Abstract: This paper presents the achievable rate region frontiers for the n-user interference channel when there is no cooperation at the transmit nor at the receive side. The receiver is assumed to treat the interference as additive thermal noise and does not employ multiuser detection. In this case, the rate region frontier for the n-user interference channel is found to be the union of n hyper-surface frontiers of dimension n-1, where each is characterized by having one of the transmitters transmitting at full power. The paper also finds the conditions determining the convexity or concavity of the frontiers for the case of two-user interference channel, and discusses when a time sharing approach should be employed with specific results pertaining to the two-user symmetric channel.

Connected through hyperedge HE-1 (induced by source paper "full duplex radio for uplink downlink wireless access with spatially random nodes"):
  with members:
    - "throughput analysis for full duplex wireless networks with imperfect self interference cancellation"
    - "joint beamforming optimization and power control for full duplex mimo two way relay channel"
    - "multipair full duplex relaying with massive arrays and linear processing"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "low complexity end to end performance optimization in mimo full duplex relay systems"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"

Connected through hyperedge HE-2 (induced by source paper "massive mimo with multi cell mmse processing exploiting all pilots for interference suppression"):
  with members:
    - "massive mimo systems with non ideal hardware energy efficiency estimation and capacity limits"
    - "massive mimo for next generation wireless systems"
    - "uplink linear receivers for multi cell multiuser mimo with pilot contamination large system analysis"
    - "massive mimo for maximal spectral efficiency how many users and pilots should be allocated"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "massive mimo how many antennas do we need"
    - "energy and spectral efficiency of very large multiuser mimo systems"

Connected through hyperedge HE-3 (induced by source paper "power control for sum rate maximization on interference channels under sum power constraint"):
  with members:
    - "signal processing and optimal resource allocation for the interference channel"
    - "performance analysis and optimization for interference alignment over mimo interference channels with limited feedback"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-4 (induced by source paper "topological interference management through index coding"):
  with members:
    - "cognitive wyner networks with clustered decoding"
    - "optimality of orthogonal access for one dimensional convex cellular networks"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "fundamental limits of caching"
    - "an equivalence between network coding and index coding"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "degrees of freedom of mimo x networks spatial scale invariance one sided decomposability and linear feasibility"
    - "degrees of freedom of interference channels with comp transmission and reception"

Connected through hyperedge HE-5 (induced by source paper "signal processing and optimal resource allocation for the interference channel"):
  with members:
    - "joint power and admission control via linear programming deflation"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "linear transceiver design for a mimo interfering broadcast channel achieving max min fairness"
    - "averaged iterative water filling algorithm robustness and convergence"
    - "robust linear precoder design for multi cell downlink transmission"
    - "balancing egoism and altruism on the interference channel the mimo case"
    - "capacity regions and sum rate capacities of vector gaussian interference channels"
    - "dynamic resource allocation in cognitive radio networks"

Connected through hyperedge HE-6 (induced by source paper "sub optimality of treating interference as noise in the cellular uplink with weak interference"):
  with members:
    - "on the optimality of treating interference as noise general message sets"
    - "extended generalized dof optimality regime of treating interference as noise in the x channel"
    - "on the optimality of treating interference as noise"
    - "achievable and crystallized rate regions of the interference channel with interference as noise"
    - "the deterministic sum capacity of a multiple access channel interfering with a point to point link"
    - "interference alignment and neutralization in a cognitive 3 user mac interference channel degrees of freedom"
    - "sub optimality of treating interference as noise in the cellular uplink"
    - "on the capacity of the 2 user gaussian mac interfering with a p2p link"

Connected through hyperedge HE-7 (induced by source paper "extended generalized dof optimality regime of treating interference as noise in the x channel"):
  with members:
    - "sub optimality of treating interference as noise in the cellular uplink with weak interference"
    - "on the optimality of treating interference as noise general message sets"
    - "on the optimality of treating interference as noise"
    - "sub optimality of treating interference as noise in the cellular uplink"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"
    - "gaussian interference networks sum capacity in the low interference regime and new outer bounds on the capacity region"
    - "generalized degrees of freedom of the symmetric gaussian k user interference channel"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-8 (induced by source paper "optimized transmission with improper gaussian signaling in the k user miso interference channel"):
  with members:
    - "transmit optimization with improper gaussian signaling for interference channels"
    - "pareto characterization of the multicell mimo performance region with simple receivers"
    - "robust monotonic optimization framework for multicell miso systems"
    - "achieving global optimality for weighted sum rate maximization in the k user gaussian interference channel with multiple antennas"
    - "optimal beamforming in interference networks with perfect local channel information"
    - "balancing egoism and altruism on the interference channel the mimo case"
    - "cooperative interference management with miso beamforming"
    - "linear transceiver design for interference alignment complexity and computation"

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)