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: "simultaneous transmission and reception algorithm design and system level performance"
  Abstract: Full Duplex or Simultaneous transmission and reception (STR) in the same frequency at the same time can potentially double the physical layer capacity. However, high power transmit signal will appear at receive chain as echoes with powers much higher than the desired received signal. Therefore, in order to achieve the potential gain, it is imperative to cancel these echoes. As these high power echoes can saturate low noise amplifier (LNA) and also digital domain echo cancellation requires unrealistically high resolution analog-to-digital converter (ADC), the echoes should be cancelled or suppressed sufficiently before LNA. In this paper we present a closed-loop echo cancellation technique which can be implemented purely in analogue domain. The advantages of our method are multiple-fold: it is robust to phase noise, does not require additional set of antennas, can be applied to wideband signals and the performance is irrelevant to radio frequency (RF) impairments in transmit chain. Next, we study a few protocols for STR systems in carrier sense multiple access (CSMA) network and investigate MAC level throughput with realistic assumptions in both single cell and multiple cells. We show that STR can reduce hidden node problem in CSMA network and produce gains of up to 279% in maximum throughput in such networks. Moreover, at high traffic load, the gain of STR system can be tremendously large since the throughput of non-STR system is close to zero at heavy traffic due to severe collisions. Finally, we investigate the application of STR in cellular systems and study two new unique interferences introduced to the system due to STR, namely BS-BS interference and UE-UE interference. We show that these two new interferences will hugely degrade system performance if not treated appropriately. We propose novel methods to reduce both interferences and investigate the performances in system level. We show that BS-BS interference can be suppressed sufficiently enough to be less than thermal noise power, and with favorable UE-UE channel model, capacities close to double are observed both in downlink (DL) and uplink (UL). When UE-UE interference is larger than DL co-channel interferences, we propose a simple and "non-cooperative" technique in order to reduce UE-UE interference.

Connected through hyperedge HE-1 (induced by source paper "backhaul aware uplink communications in full duplex dbs aided hetnets"):
  with members:
    - "3 d placement of an unmanned aerial vehicle base station for maximum coverage of users with different qos requirements"
    - "energy aware virtual machine management in inter datacenter networks over elastic optical infrastructure"
    - "placement optimization of uav mounted mobile base stations"
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "the new frontier in ran heterogeneity multi tier drone cells"

Connected through hyperedge HE-2 (induced by source paper "user selection and power allocation in full duplex multicell networks"):
  with members:
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "leveraging one hop information in massive mimo full duplex wireless systems"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "full duplex cloud radio access networks an information theoretic viewpoint"
    - "full duplex operation for small cells"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-3 (induced by source paper "an augmented nonlinear complex lms for digital self interference cancellation in full duplex direct conversion transceivers"):
  with members:
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "analysis of oscillator phase noise effects on self interference cancellation in full duplex ofdm radio transceivers"
    - "full duplex mobile device pushing the limits"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"
    - "full duplex transceiver system calculations analysis of adc and linearity challenges"
    - "in band full duplex wireless challenges and opportunities"
    - "experiment driven characterization of full duplex wireless systems"

Connected through hyperedge HE-4 (induced by source paper "large antenna analysis of multi cell full duplex networks"):
  with members:
    - "5g cellular key enabling technologies and research challenges"
    - "degrees of freedom of full duplex multiantenna cellular networks"
    - "opportunistic scheduling for full duplex uplink downlink networks"
    - "leveraging one hop information in massive mimo full duplex wireless systems"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "massive mimo for next generation wireless systems"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "scaling up mimo opportunities and challenges with very large arrays"

Connected through hyperedge HE-5 (induced by source paper "compact full duplex mimo radios in d2d underlaid cellular networks from system design to prototype results"):
  with members:
    - "wideband self adaptive rf cancellation circuit for full duplex radio operating principle and measurements"
    - "prototyping real time full duplex radios"
    - "cancellation of power amplifier induced nonlinear self interference in full duplex transceivers"
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "modeling and efficient cancellation of nonlinear self interference in mimo full duplex transceivers"
    - "in band full duplex wireless challenges and opportunities"
    - "power control for d2d underlaid cellular networks modeling algorithms and analysis"

Connected through hyperedge HE-6 (induced by source paper "qos based linear transceiver optimization for full duplex multi user communications"):
  with members:
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "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"
    - "full duplex bidirectional mimo achievable rates under limited dynamic range"

Connected through hyperedge HE-7 (induced by source paper "a linearization technique for self interference cancellation in full duplex radios"):
  with members:
    - "passive self interference suppression for full duplex infrastructure nodes"
    - "in band full duplex wireless challenges and opportunities"
    - "an analog baseband approach for designing full duplex radios"
    - "pushing the limits of full duplex design and real time implementation"

Connected through hyperedge HE-8 (induced by source paper "wideband self adaptive rf cancellation circuit for full duplex radio operating principle and measurements"):
  with members:
    - "cancellation of power amplifier induced nonlinear self interference in full duplex transceivers"
    - "widely linear digital self interference cancellation in direct conversion full duplex transceiver"
    - "full duplex transceiver system calculations analysis of adc and linearity challenges"
    - "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.NI(Networking and Internet Architecture)