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: "interference channel with an out of band relay"
  Abstract: A Gaussian interference channel (IC) with a relay is considered. The relay is assumed to operate over an orthogonal band with respect to the underlying IC, and the overall system is referred to as IC with an out-of-band relay (IC-OBR). The system can be seen as operating over two parallel interference-limited channels: The first is a standard Gaussian IC and the second is a Gaussian relay channel characterized by two sources and destinations communicating through the relay without direct links. We refer to the second parallel channel as OBR Channel (OBRC). The main aim of this work is to identify conditions under which optimal operation, in terms of the capacity region of the IC-OBR, entails either signal relaying and/or interference forwarding by the relay, with either a separable or non-separable use of the two parallel channels, IC and OBRC. Here "separable" refers to transmission of independent information over the two constituent channels. For a basic model in which the OBRC consists of four orthogonal channels from sources to relay and from relay to destinations (IC-OBR Type-I), a condition is identified under which signal relaying and separable operation is optimal. When this condition is not satisfied, various scenarios are identified in which interference forwarding and non-separable operation are necessary to achieve optimal performance. In these scenarios, the system exploits the "excess capacity" on the OBRC via interference forwarding to drive the IC-OBR system in specific interference regimes (strong or mixed). The analysis is then turned to a more complex IC-OBR, in which the OBRC consists of only two orthogonal channels, one from sources to relay and one from relay to destinations (IC-OBR Type-II). For this channel, some capacity resuls are derived that parallel the conclusions for IC-OBR Type-I.

Connected through hyperedge HE-1 (induced by source paper "ldpc lattice codes for full duplex relay channels"):
  with members:
    - "practical encoder and decoder for power constrained qc ldpc lattices"
    - "on the performance of 1 level ldpc lattices"
    - "an algebraic approach to physical layer network coding"
    - "wireless network information flow a deterministic approach"
    - "lattice codes for the gaussian relay channel decode and forward and compress and forward"
    - "compute and forward harnessing interference through structured codes"
    - "low density lattice codes"

Connected through hyperedge HE-2 (induced by source paper "capacity bounds for a class of interference relay channels"):
  with members:
    - "new outer bounds for the interference channel with unilateral source cooperation"
    - "mixed noisy network coding and cooperative unicasting in wireless networks"
    - "a new achievable scheme for interference relay channels"
    - "two birds and one stone gaussian interference channel with a shared out of band relay of limited rate"
    - "wireless network information flow a deterministic approach"
    - "incremental relaying for the gaussian interference channel with a degraded broadcasting relay"
    - "interference channels with source cooperation"
    - "the gaussian interference relay channel improved achievable rates and sum rate upperbounds using a potent relay"

Connected through hyperedge HE-3 (induced by source paper "a relay can increase degrees of freedom in bursty mimo interference networks"):
  with members:
    - "a new achievable scheme for interference relay channels"
    - "two birds and one stone gaussian interference channel with a shared out of band relay of limited rate"
    - "the gaussian interference relay channel improved achievable rates and sum rate upperbounds using a potent relay"
    - "completely stale transmitter channel state information is still very useful"
    - "symmetric capacity of the gaussian interference channel with an out of band relay to within 1 15 bits"
    - "feedback capacity of the gaussian interference channel to within 2 bits"

Connected through hyperedge HE-4 (induced by source paper "power control and soft topology adaptations in multihop cellular networks with multi point connectivity"):
  with members:
    - "two birds and one stone gaussian interference channel with a shared out of band relay of limited rate"
    - "uplink multicell processing with limited backhaul via per base station successive interference cancellation"
    - "symmetric capacity of the gaussian interference channel with an out of band relay to within 1 15 bits"
    - "distributed power allocation strategies for parallel relay networks"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-5 (induced by source paper "two birds and one stone gaussian interference channel with a shared out of band relay of limited rate"):
  with members:
    - "wireless network information flow a deterministic approach"
    - "incremental relaying for the gaussian interference channel with a degraded broadcasting relay"
    - "the gaussian interference relay channel improved achievable rates and sum rate upperbounds using a potent relay"
    - "symmetric capacity of the gaussian interference channel with an out of band relay to within 1 15 bits"
    - "gaussian z interference channel with a relay link achievability region and asymptotic sum capacity"
    - "interference mitigation through limited receiver cooperation"
    - "interference relay channels part i transmission rates"
    - "the two user gaussian interference channel a deterministic view"

Connected through hyperedge HE-6 (induced by source paper "guiding blind transmitters degrees of freedom optimal interference alignment using relays"):
  with members:
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"
    - "the gaussian interference relay channel improved achievable rates and sum rate upperbounds using a potent relay"
    - "completely stale transmitter channel state information is still very useful"
    - "symmetric capacity of the gaussian interference channel with an out of band relay to within 1 15 bits"
    - "interference alignment with asymmetric complex signaling settling the host madsen nosratinia conjecture"
    - "degrees of freedom of the k user m times n mimo interference channel"

Connected through hyperedge HE-7 (induced by source paper "cooperative compute and forward"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "phase precoding for the compute and forward protocol"
    - "structured lattice codes for some two user gaussian networks with cognition coordination and two hops"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "asynchronous physical layer network coding"
    - "compute and forward strategies for cooperative distributed antenna systems"
    - "a secure communication game with a relay helping the eavesdropper"
    - "wireless network information flow a deterministic approach"

Connected through hyperedge HE-8 (induced by source paper "spectrum sharing with distributed relay selection and clustering"):
  with members:
    - "capacity limits of multiuser multiantenna cognitive networks"
    - "on ergodic sum capacity of fading cognitive multiple access and broadcast channels"
    - "on peak versus average interference power constraints for protecting primary users in cognitive radio networks"
    - "hierarchical cooperation achieves optimal capacity scaling in ad hoc networks"
    - "cooperative relay broadcast channels"

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)