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: "diversity multiplexing tradeoff of asynchronous cooperative diversity in wireless networks"
  Abstract: Synchronization of relay nodes is an important and critical issue in exploiting cooperative diversity in wireless networks. In this paper, two asynchronous cooperative diversity schemes are proposed, namely, distributed delay diversity and asynchronous space-time coded cooperative diversity schemes. In terms of the overall diversity-multiplexing (DM) tradeoff function, we show that the proposed independent coding based distributed delay diversity and asynchronous space-time coded cooperative diversity schemes achieve the same performance as the synchronous space-time coded approach which requires an accurate symbol-level timing synchronization to ensure signals arriving at the destination from different relay nodes are perfectly synchronized. This demonstrates diversity order is maintained even at the presence of asynchronism between relay node. Moreover, when all relay nodes succeed in decoding the source information, the asynchronous space-time coded approach is capable of achieving better DM-tradeoff than synchronous schemes and performs equivalently to transmitting information through a parallel fading channel as far as the DM-tradeoff is concerned. Our results suggest the benefits of fully exploiting the space-time degrees of freedom in multiple antenna systems by employing asynchronous space-time codes even in a frequency flat fading channel. In addition, it is shown asynchronous space-time coded systems are able to achieve higher mutual information than synchronous space-time coded systems for any finite signal-to-noise-ratio (SNR) when properly selected baseband waveforms are employed.

Connected through hyperedge HE-1 (induced by source paper "asynchronous interference alignment"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "ergodic interference alignment"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"
    - "interference alignment with asymmetric complex signaling settling the host madsen nosratinia conjecture"
    - "capacity bounds for the gaussian interference channel"
    - "interference alignment for line of sight channels"
    - "gaussian interference channel capacity to within one bit"
    - "interference alignment and the degrees of freedom for the k user interference channel"

Connected through hyperedge HE-2 (induced by source paper "construction of new delay tolerant space time codes"):
  with members:
    - "on fast decodable space time block codes"
    - "optimal space time codes for the mimo amplify and forward cooperative channel"

Connected through hyperedge HE-3 (induced by source paper "d mg tradeoff of df and af relaying protocols over asynchronous pam cooperative networks"):
  with members:
    - "ofdm based distributed space time coding for asynchronous relay networks"
    - "d mg tradeoff and optimal codes for a class of af and df cooperative communication protocols"
    - "approximately universal codes over slow fading channels"
    - "perfect space time codes with minimum and non minimum delay for any number of antennas"

Connected through hyperedge HE-4 (induced by source paper "dmt of multi hop cooperative networks part i basic results"):
  with members:
    - "multi hop cooperative wireless networks diversity multiplexing tradeoff and optimal code design"
    - "diversity and degrees of freedom of cooperative wireless networks"
    - "to code or not to code in multi hop relay channels"
    - "dmt of multi hop cooperative networks part ii half duplex networks with full duplex performance"
    - "the case for structured random codes in network capacity theorems"
    - "approximate capacity of gaussian relay networks"
    - "a deterministic approach to wireless relay networks"
    - "interference alignment on the deterministic channel and application to fully connected awgn interference networks"

Connected through hyperedge HE-5 (induced by source paper "multi hop cooperative wireless networks diversity multiplexing tradeoff and optimal code design"):
  with members:
    - "diversity and degrees of freedom of cooperative wireless networks"
    - "a deterministic approach to wireless relay networks"
    - "diversity of mimo multihop relay channels"
    - "optimum diversity multiplexing tradeoff in the multiple relays network"
    - "towards the optimal amplify and forward cooperative diversity scheme"
    - "d mg tradeoff and optimal codes for a class of af and df cooperative communication protocols"
    - "optimal space time codes for the mimo amplify and forward cooperative channel"
    - "approximately universal codes over slow fading channels"

Connected through hyperedge HE-6 (induced by source paper "diversity multiplexing tradeoff of asynchronous cooperative relay networks"):
  with members:
    - "distributed space time codes with low decoding complexity for asynchronous relay networks"
    - "towards the optimal amplify and forward cooperative diversity scheme"
    - "approximately universal codes over slow fading 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)