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: "spatial multiplexing with mmse receivers single stream optimality in ad hoc networks"
  Abstract: The performance of spatial multiplexing systems with linear minimum-mean-squared-error receivers is investigated in ad hoc networks. It is shown that single-stream transmission is preferable over multi-stream transmission, due to the weaker interference powers from the strongest interferers remaining after interference-cancelation. This result is obtained by new exact closed-form expressions we derive for the outage probability and transmission capacity.

Connected through hyperedge HE-1 (induced by source paper "performance of pzf and mmse receivers in cellular networks with multi user spatial multiplexing"):
  with members:
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "open loop spatial multiplexing and diversity communications in ad hoc networks"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-2 (induced by source paper "asymptotic spectral efficiency of the uplink in spatially distributed wireless networks with multi antenna base stations"):
  with members:
    - "analytical modeling of uplink cellular networks"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "open loop spatial multiplexing and diversity communications in ad hoc networks"
    - "a deterministic equivalent for the analysis of correlated mimo multiple access channels"
    - "a tractable approach to coverage and rate in cellular networks"
    - "performance of optimum combining in a poisson field of interferers and rayleigh fading channels"

Connected through hyperedge HE-3 (induced by source paper "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"):
  with members:
    - "an overview of the transmission capacity of wireless networks"
    - "performance of optimum combining in a poisson field of interferers and rayleigh fading channels"
    - "spatial interference cancellation for multi antenna mobile ad hoc networks"
    - "transmission capacity of ad hoc networks with spatial diversity"

Connected through hyperedge HE-4 (induced by source paper "an overview of the transmission capacity of wireless networks"):
  with members:
    - "random access transport capacity"
    - "performance of optimum combining in a poisson field of interferers and rayleigh fading channels"
    - "transmission capacities for overlaid wireless ad hoc networks with outage constraints"
    - "transmission capacity of ad hoc networks with multiple antennas using transmit stream adaptation and interference cancelation"
    - "outage local throughput and capacity of random wireless networks"
    - "interference and outage in clustered wireless ad hoc networks"
    - "spatial interference cancellation for multi antenna mobile ad hoc networks"
    - "spectrum sharing between cellular and mobile ad hoc networks transmission capacity trade off"

Connected through hyperedge HE-5 (induced by source paper "on the spectral efficiency of links with multi antenna receivers in non homogenous wireless networks"):
  with members:
    - "performance of optimum combining in a poisson field of interferers and rayleigh fading channels"
    - "performance of interference alignment in clustered wireless ad hoc networks"
    - "transmission capacity of ad hoc networks with multiple antennas using transmit stream adaptation and interference cancelation"
    - "interference and outage in clustered wireless ad hoc networks"
    - "transmission capacity of ad hoc networks with spatial diversity"

Connected through hyperedge HE-6 (induced by source paper "asymptotic spectral efficiency of multi antenna links in wireless networks with limited tx csi"):
  with members:
    - "transmission capacity of ad hoc networks with multiple antennas using transmit stream adaptation and interference cancelation"
    - "transmission capacity of ad hoc networks with spatial diversity"

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)