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: "limited feedback for temporally correlated mimo channels with other cell interference"
  Abstract: Limited feedback improves link reliability with a small amount of feedback from the receiver to the transmitter. In cellular systems, the performance of limited feedback will be degraded in the presence of other cell interference, when the base stations have limited or no coordination. This paper establishes the degradation in sum rate of users in a cellular system, due to uncoordinated other cell interference and feedback delay. A goodput metric is defined as the rate when the bits are successfully received at the mobile station, and used to derive an upper bound on the performance of limited feedback systems with delay. This paper shows that the goodput gained from having delayed limited feedback decreases doubly exponentially as the delay increases. The analysis is extended to precoded spatial multiplexing systems where it is shown that the same upper bound can be used to evaluate the decay in the achievable sum rate. To reduce the effects of interference, zero forcing interference nulling is applied at the receiver, where it is shown that the effect of the interference on the achievable sum rate can be suppressed by nulling out the interferer. Numerical results show that the decay rate of the goodput decreases when the codebook quantization size increases and when the Doppler shift in the channel decreases.

Connected through hyperedge HE-1 (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-2 (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"
    - "adaptive bit partitioning for multicell intercell interference nulling with delayed limited feedback"

Connected through hyperedge HE-3 (induced by source paper "adaptive downlink comp in heterogeneous cellular networks with imperfect overhead messaging"):
  with members:
    - "joint beamforming and power control in coordinated multicell max min duality effective network and large system transition"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink coordinated multi point with overhead modeling in heterogeneous cellular networks"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "a tractable approach to coverage and rate in cellular networks"
    - "mimo broadcast channels with finite rate feedback"

Connected through hyperedge HE-4 (induced by source paper "performance analysis of heterogeneous feedback design in an ofdma downlink with partial and imperfect feedback"):
  with members:
    - "sum rate analysis of a reduced feedback ofdma downlink system employing joint scheduling and diversity"
    - "design and analysis of multi user sdma systems with noisy limited csit feedback"
    - "on the mutual information distribution of ofdm based spatial multiplexing exact variance and outage approximation"

Connected through hyperedge HE-5 (induced by source paper "downlink coordinated multi point with overhead modeling in heterogeneous cellular networks"):
  with members:
    - "interference coordination random clustering and adaptive limited feedback"
    - "joint beamforming and power control in coordinated multicell max min duality effective network and large system transition"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "fundamentals of inter cell overhead signaling in heterogeneous cellular networks"
    - "fundamental limits of cooperation"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "distributed sir aware scheduling in large scale wireless networks"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"

Connected through hyperedge HE-6 (induced by source paper "outage based ergodic link adaptation for fading channels with delayed csit"):
  with members:
    - "performance analysis of heterogeneous feedback design in an ofdma downlink with partial and imperfect feedback"

Connected through hyperedge HE-7 (induced by source paper "limited feedback over temporally correlated channels for the downlink of a femtocell network"):
  with members:
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "goodput maximization in cooperative networks with arq"
    - "asymptotic spectral efficiency of multi antenna links in wireless networks with limited tx csi"
    - "open vs closed access femtocells in the uplink"
    - "transmission capacity of ad hoc networks with multiple antennas using transmit stream adaptation and interference cancelation"
    - "mode switching for the multi antenna broadcast channel based on delay and channel quantization"
    - "coding versus arq in fading channels how reliable should the phy be"
    - "coverage in multi antenna two tier 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)