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: "joint design of multi tap analog cancellation and digital beamforming for reduced complexity full duplex mimo systems"
  Abstract: Incorporating full duplex operation in Multiple Input Multiple Output (MIMO) systems provides the potential of boosting throughput performance. However, the hardware complexity of the analog self-interference canceller scales with the number of transmit and receive antennas, thus exploiting the benefits of analog cancellation becomes impractical for full duplex MIMO transceivers. In this paper, we present a novel architecture for the analog canceller comprising of reduced number of taps (tap refers to a line of fixed delay and variable phase shifter and attenuator) and simple multiplexers for efficient signal routing among the transmit and receive radio frequency chains. In contrast to the available analog cancellation architectures, the values for each tap and the configuration of the multiplexers are jointly designed with the digital beamforming filters according to certain performance objectives. Focusing on a narrowband flat fading channel model as an example, we present a general optimization framework for the joint design of analog cancellation and digital beamforming. We also detail a particular optimization objective together with its derived solution for the latter architectural components. Representative computer simulation results demonstrate the superiority of the proposed low complexity full duplex MIMO system over lately available ones.

Connected through hyperedge HE-1 (induced by source paper "full duplex hybrid a d beamforming with reduced complexity multi tap analog cancellation"):
  with members:
    - "full duplex millimeter wave communication"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "softnull many antenna full duplex wireless via digital beamforming"
    - "hybrid beamforming for massive mimo a survey"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-2 (induced by source paper "simultaneous downlink data transmission and uplink channel estimation with reduced complexity full duplex mimo radios"):
  with members:
    - "sequential beamforming for multiuser mimo with full duplex training"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless systems"
    - "mimo broadcast channels with finite rate feedback"

Connected through hyperedge HE-3 (induced by source paper "max min fairness user scheduling and power allocation in full duplex ofdma systems"):
  with members:
    - "joint user scheduling and power optimization in full duplex cells with successive interference cancellation"
    - "user selection and power allocation in full duplex multicell networks"
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "resource allocation in ofdma networks with half duplex and imperfect full duplex users"
    - "optimizing df cognitive radio networks with full duplex enabled energy access points"
    - "joint downlink base station association and power control for max min fairness computation and complexity"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"

Connected through hyperedge HE-4 (induced by source paper "full duplex transmission optimization for bi directional mimo links with qos guarantees"):
  with members:
    - "hardware impairments aware transceiver design for full duplex amplify and forward mimo relaying"
    - "advanced coordinated beamforming for the downlink of future lte cellular networks"
    - "signaling design of two way mimo full duplex channel optimality under imperfect transmit front end chain"
    - "joint beamforming optimization and power control for full duplex mimo two way relay channel"
    - "reference receiver based digital self interference cancellation in mimo full duplex transceivers"
    - "on the outage probability of the full duplex interference limited relay channel"
    - "full duplex mobile device pushing the limits"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-5 (induced by source paper "low complexity full duplex mimo novel analog cancellation architectures and transceiver design"):
  with members:
    - "user scheduling and optimal power allocation for full duplex cellular networks"
    - "performance evaluation of user scheduling for full duplex small cells in ultra dense networks"
    - "optimal low complexity self interference cancellation for full duplex mimo small cells"
    - "softnull many antenna full duplex wireless via digital beamforming"
    - "hybrid beamforming for massive mimo a survey"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless systems"

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)