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: "multihop backhaul compression for the uplink of cloud radio access networks"
  Abstract: In cloud radio access networks (C-RANs), the baseband processing of the radio units (RUs) is migrated to remote control units (CUs). This is made possible by a network of backhaul links that connects RUs and CUs and that carries compressed baseband signals. While prior work has focused mostly on single-hop backhaul networks, this paper investigates efficient backhaul compression strategies for the uplink of C-RANs with a general multihop backhaul topology. A baseline multiplex-and-forward (MF) scheme is first studied in which each RU forwards the bit streams received from the connected RUs without any processing. It is observed that this strategy may cause significant performance degradation in the presence of a dense deployment of RUs with a well connected backhaul network. To obviate this problem, a scheme is proposed in which each RU decompresses the received bit streams and performs linear in-network processing of the decompressed signals. For both the MF and the decompress-process-and-recompress (DPR) backhaul schemes, the optimal design is addressed with the aim of maximizing the sum-rate under the backhaul capacity constraints. Recognizing the significant demands of the optimal solution of the DPR scheme in terms of channel state information (CSI) at the RUs, decentralized optimization algorithms are proposed under the assumption of limited CSI at the RUs. Numerical results are provided to compare the performance of the MF and DPR schemes, highlighting the potential advantage of in-network processing and the impact of CSI limitations.

Connected through hyperedge HE-1 (induced by source paper "robust regularized zf in cooperative broadcast channel under distributed csit"):
  with members:
    - "on the optimal fronthaul compression and decoding strategies for uplink cloud radio access networks"
    - "network mimo transmitters with no csi can still be very useful"
    - "regularized zf in cooperative broadcast channels under distributed csit a large system analysis"
    - "drone small cells in the clouds design deployment and performance analysis"
    - "linear precoding based on polynomial expansion reducing complexity in massive mimo"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "completely stale transmitter channel state information is still very useful"
    - "a scalable limited feedback design for network mimo using per cell product codebook"

Connected through hyperedge HE-2 (induced by source paper "cross layer design for downlink multihop cloud radio access networks with network coding"):
  with members:
    - "energy efficiency of downlink transmission strategies for cloud radio access networks"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "sparse beamforming and user centric clustering for downlink cloud radio access network"
    - "joint precoding and multivariate backhaul compression for the downlink of cloud radio access networks"
    - "min flow rate maximization for software defined radio access networks"
    - "optimized data sharing in multicell mimo with finite backhaul capacity"

Connected through hyperedge HE-3 (induced by source paper "recent advances in cloud radio access networks system architectures key techniques and open issues"):
  with members:
    - "fronthaul compression and precoding design for c rans over ergodic fading channels"
    - "optimal fronthaul quantization for cloud radio positioning"
    - "inter tier interference suppression in heterogeneous cloud radio access networks"
    - "contract based interference coordination in heterogeneous cloud radio access networks"
    - "are heterogeneous cloud based radio access networks cost effective"
    - "energy efficient resource assignment and power allocation in heterogeneous cloud radio access networks"
    - "cooperative interference mitigation and handover management for heterogeneous cloud small cell networks"
    - "fronthaul constrained cloud radio access networks insights and challenges"

Connected through hyperedge HE-4 (induced by source paper "lossy compression for compute and forward in limited backhaul uplink multicell processing"):
  with members:
    - "expanding the compute and forward framework unequal powers signal levels and multiple linear combinations"
    - "compute compress and forward exploiting asymmetry of wireless relay networks"
    - "optimized backhaul compression for uplink cloud radio access network"
    - "compute and forward on a multi user multi relay channel"
    - "successive integer forcing and its sum rate optimality"
    - "compute and forward on a multiaccess relay channel coding and symmetric rate optimization"
    - "uplink multicell processing with limited backhaul via per base station successive interference cancellation"
    - "robust and efficient distributed compression for cloud radio access networks"

Connected through hyperedge HE-5 (induced by source paper "in network compression for multiterminal cascade mimo systems"):
  with members:
    - "lossy compression for compute and forward in limited backhaul uplink multicell processing"
    - "optimized backhaul compression for uplink cloud radio access network"
    - "distributed function computation over a rooted directed tree"
    - "robust and efficient distributed compression for cloud radio access networks"
    - "compute and forward strategies for cooperative distributed antenna systems"
    - "cascade and triangular source coding with side information at the first two nodes"
    - "cascade multiterminal source coding"

Connected through hyperedge HE-6 (induced by source paper "cloud radio access network virtualizing wireless access for dense heterogeneous systems"):
  with members:
    - "fronthaul compression and precoding design for c rans over ergodic fading channels"
    - "contract based interference coordination in heterogeneous cloud radio access networks"
    - "on the effect of fronthaul latency on arq in c ran systems"
    - "uplink harq for distributed and cloud ran via separation of control and data planes"
    - "joint power and antenna selection optimization in large cloud radio access networks"
    - "resource allocation optimization for delay sensitive traffic in fronthaul constrained cloud radio access networks"
    - "optimized backhaul compression for uplink cloud radio access network"
    - "parallel and distributed methods for nonconvex optimization part i theory"

Connected through hyperedge HE-7 (induced by source paper "a novel cooperative strategy for wireless multihop backhaul networks"):
  with members:
    - "capacity approximations for gaussian relay networks"
    - "an algebraic approach to physical layer network coding"
    - "two birds and one stone gaussian interference channel with a shared out of band relay of limited rate"
    - "coding and system design for quantize map and forward relaying"
    - "short message noisy network coding with a decode forward option"
    - "compute and forward strategies for cooperative distributed antenna systems"
    - "wireless network information flow a deterministic approach"
    - "integer forcing linear receivers"

Connected through hyperedge HE-8 (induced by source paper "delay aware uplink fronthaul allocation in cloud radio access networks"):
  with members:
    - "dynamic power control for delay aware device to device communications"
    - "full duplex cloud radio access networks an information theoretic viewpoint"
    - "optimized backhaul compression for uplink cloud radio access network"
    - "joint power control and fronthaul rate allocation for throughput maximization in ofdma based cloud radio access network"
    - "joint precoding and multivariate backhaul compression for the downlink of cloud radio access networks"
    - "a survey on delay aware resource control for wireless systems large deviation theory stochastic lyapunov drift and distributed stochastic learning"
    - "queue aware dynamic clustering and power allocation for network mimo systems via distributed stochastic learning"
    - "distributive stochastic learning for delay optimal ofdma power and subband allocation"

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)