human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "multi user detection based on expectation propagation for the non coherent simo multiple access channel"):
  Abstract: We consider the non-coherent single-input multiple-output (SIMO) multiple access channel with Grassmannian signaling under Rayleigh block fading. We propose a novel soft-output multi-user detector that computes the marginalized posterior of each transmitted signal using only the knowledge about the channel distribution. Our detector is based on expectation propagation (EP) approximate inference and has polynomial complexity in the number of users. A simplification of this detector, with reduced complexity, coincides with soft minimum-mean-square-error (MMSE) estimation and successive interference cancellation (SIC). Both detectors produce accurate approximates of the true posterior which lead to a high mismatched sum-rate of the system that uses the approximate posterior as the decoding metric. The proposed detectors also outperform, in terms of symbol error rate, a conventional coherent pilot-based detector and a state-of-the-art detector based on projecting the received signal onto the subspace orthogonal to the interference. The gain of our EP and MMSE-SIC detectors are further observed in terms of the bit error rate when using their soft outputs for a turbo channel decoder.

Includes members:
  Member "cube split a structured grassmannian constellation for non coherent simo communications":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "joint constellation design for the two user non coherent multiple access channel")
  Member "probabilistic mimo symbol detection with expectation consistency approximate inference":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "artificial intelligence aided receiver for a cp free ofdm system design simulation and experimental test")
  Member "fifty years of mimo detection the road to large scale mimos":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "model driven deep learning for joint mimo channel estimation and signal detection")
  Member "manopt a matlab toolbox for optimization on manifolds":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "joint constellation design for the two user non coherent multiple access channel")
  Member "a new class of upper bounds on the log partition function":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "visual semantic information pursuit a survey")
  Member "on the capacity of large mimo block fading channels":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "saddlepoint approximations for rayleigh block fading channels")
  Member "mimo detection for high order qam based on a gaussian tree approximation":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "probabilistic mimo symbol detection with expectation consistency approximate inference")

Question: Please tell me which class the source paper 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)