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: "adaptive bit partitioning for multicell intercell interference nulling with delayed limited feedback"
  Abstract: Base station cooperation can exploit knowledge of the users' channel state information (CSI) at the transmitters to manage co-channel interference. Users have to feedback CSI of the desired and interfering channels using finite-bandwidth backhaul links. Existing codebook designs for single-cell limited feedback can be used for multicell cooperation by partitioning the available feedback resources between the multiple channels. In this paper, a new feedback-bit allocation strategy is proposed, as a function of the delays in the communication links and received signal strengths in the downlink. Channel temporal correlation is modeled as a function of delay using the Gauss-Markov model. Closed-form expressions for bit partitions are derived to allocate more bits to quantize the stronger channels with smaller delays and fewer bits to weaker channels with larger delays, assuming random vector quantization. Cellular network simulations are used to show that the algorithm presented in the paper yields higher sum-rates than the equal-bit allocation technique.

Connected through hyperedge HE-1 (induced by source paper "provisioning energy efficiency and qos for multi carrier comp with limited feedback"):
  with members:
    - "performance analysis and optimization for interference alignment over mimo interference channels with limited feedback"
    - "what will 5g be"
    - "interference coordination random clustering and adaptive limited feedback"
    - "group sparse beamforming for green cloud ran"
    - "five disruptive technology directions for 5g"
    - "scaling up mimo opportunities and challenges with very large arrays"
    - "fundamental limits of cooperation"
    - "downlink sdma with limited feedback in interference limited wireless networks"

Connected through hyperedge HE-2 (induced by source paper "feedback design for multi antenna k tier heterogeneous downlink cellular networks"):
  with members:
    - "cooperative base station coloring for pair wise multi cell coordination"
    - "on the optimal feedback rate in interference limited multi antenna cellular systems"
    - "achievable sum dof of the k user mimo interference channel with delayed csit"
    - "distributed channel estimation and pilot contamination analysis for massive mimo ofdm systems"
    - "spectral efficiency of dynamic coordinated beamforming a stochastic geometry approach"
    - "downlink cellular network analysis with multi slope path loss models"
    - "user centric intercell interference nulling for downlink small cell networks"
    - "interference coordination random clustering and adaptive limited feedback"

Connected through hyperedge HE-3 (induced by source paper "on the optimal feedback rate in interference limited multi antenna cellular systems"):
  with members:
    - "success probability and area spectral efficiency in multiuser mimo hetnets"
    - "spectral efficiency of dynamic coordinated beamforming a stochastic geometry approach"
    - "spectral efficiency scaling laws in dense random wireless networks with multiple receive antennas"
    - "user centric intercell interference nulling for downlink small cell networks"
    - "interference coordination random clustering and adaptive limited feedback"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "downlink multi antenna heterogeneous cellular network with load balancing"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"

Connected through hyperedge HE-4 (induced by source paper "separation framework an enabler for cooperative and d2d communication for future 5g networks"):
  with members:
    - "d2d enhanced heterogeneous cellular networks with dynamic tdd"
    - "algorithms for enhanced inter cell interference coordination eicic in lte hetnets"
    - "software defined networking a comprehensive survey"
    - "a survey on device to device communication in cellular networks"
    - "what will 5g be"
    - "cache enabled opportunistic cooperative mimo for video streaming in wireless systems"
    - "millimeter wave cellular wireless networks potentials and challenges"
    - "hierarchical radio resource optimization for heterogeneous networks with enhanced inter cell interference coordination eicic"

Connected through hyperedge HE-5 (induced by source paper "bit partitioning schemes for multiceli zero forcing coordinated beamforming"):
  with members:
    - "adaptive spatial intercell interference cancellation in multicell wireless networks"
    - "mimo broadcast channels with finite rate feedback"

Connected through hyperedge HE-6 (induced by source paper "how much feedback is required in multi antenna downlink cellular systems"):
  with members:
    - "spectral efficiency of dynamic coordinated beamforming a stochastic geometry approach"
    - "spectral efficiency scaling laws in dense random wireless networks with multiple receive antennas"
    - "user centric intercell interference nulling for downlink small cell networks"
    - "interference coordination random clustering and adaptive limited feedback"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "downlink sdma with limited feedback in interference limited wireless networks"
    - "multi mode transmission for the mimo broadcast channel with imperfect channel state information"

Connected through hyperedge HE-7 (induced by source paper "user centric intercell interference nulling for downlink small cell networks"):
  with members:
    - "a tractable model for noncoherent joint transmission base station cooperation"
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"
    - "interference coordination random clustering and adaptive limited feedback"
    - "coverage and throughput analysis with a non uniform small cell deployment"
    - "throughput and energy efficiency analysis of small cell networks with multi antenna base stations"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "network mimo with linear zero forcing beamforming large system analysis impact of channel estimation and reduced complexity scheduling"
    - "modeling heterogeneous network interference using poisson point processes"

Connected through hyperedge HE-8 (induced by source paper "quantized csi based tomlinson harashima precoding in multiuser mimo systems"):
  with members:
    - "eigen based transceivers for the mimo broadcast channel with semi orthogonal user selection"
    - "adaptive limited feedback for sum rate maximizing beamforming in cooperative multicell systems"
    - "mimo broadcast channels with finite rate feedback"

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)