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: "short packet downlink transmission with non orthogonal multiple access"
  Abstract: This paper introduces downlink non-orthogonal multiple access (NOMA) into short-packet communications. NOMA has great potential to improve fairness and spectral efficiency with respect to orthogonal multiple access (OMA) for low-latency downlink transmission, thus making it attractive for the emerging Internet of Things. We consider a two-user downlink NOMA system with finite blocklength constraints, in which the transmission rates and power allocation are optimized. To this end, we investigate the trade-off among the transmission rate, decoding error probability, and the transmission latency measured in blocklength. Then, a 1-D search algorithm is proposed to resolve the challenges mainly due to the achievable rate affected by the finite blocklength and the unguaranteed successive interference cancellation. We also analyze the performance of OMA as a benchmark to fully demonstrate the benefit of NOMA. Our simulation results show that NOMA significantly outperforms OMA in terms of achieving a higher effective throughput subject to the same finite blocklength constraint, or incurring a lower latency to achieve the same effective throughput target. Interestingly, we further find that with the finite blocklength, the advantage of NOMA relative to OMA is more prominent when the effective throughput targets at the two users become more comparable.

Connected through hyperedge HE-1 (induced by source paper "robust urllc packet scheduling of ofdm systems"):
  with members:
    - "ultrareliable and low latency communication techniques for tactile internet services"
    - "a vision of 6g wireless systems applications trends technologies and open research problems"
    - "resource allocation for multi user downlink urllc ofdma systems"
    - "resource allocation and harq optimization for urllc traffic in 5g wireless networks"
    - "cross layer optimization for ultra reliable and low latency radio access networks"
    - "energy efficient packet scheduling with finite blocklength codes convexity analysis and efficient algorithms"
    - "coordinated beamforming for multiuser miso interference channel under rate outage constraints"
    - "quasi static multiple antenna fading channels at finite blocklength"

Connected through hyperedge HE-2 (induced by source paper "effective capacity of noma with finite blocklength for low latency communications"):
  with members:
    - "on the performance of non orthogonal multiple access in the finite blocklength regime"
    - "effective capacity and power allocation for machine type communication"
    - "a vision of 6g wireless systems applications trends technologies and open research problems"
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "performance analysis of noma for ultra reliable and low latency communications"
    - "effective capacity in wireless networks a comprehensive survey"
    - "power domain non orthogonal multiple access noma in 5g systems potentials and challenges"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"

Connected through hyperedge HE-3 (induced by source paper "random access for massive machine type communications"):
  with members:
    - "beamwidth control for noma in hybrid mmwave communication systems"
    - "design of non orthogonal beamspace multiple access for cellular internet of things"
    - "on the performance gain of noma over oma in uplink single cell systems"
    - "multi beam noma for hybrid mmwave systems"
    - "joint pilot and payload power control for uplink mimo noma with mrc sic receivers"
    - "reliability based windowed decoding for spatially coupled ldpc codes"
    - "a multi beam noma framework for hybrid mmwave systems"
    - "sparse activity detection for massive connectivity"

Connected through hyperedge HE-4 (induced by source paper "lattice coding for downlink multiuser transmission"):
  with members:
    - "downlink non orthogonal multiple access without sic for block fading channels an algebraic rotation approach"
    - "joint pilot and payload power control for uplink mimo noma with mrc sic receivers"
    - "a multi beam noma framework for hybrid mmwave systems"
    - "optimal resource allocation for power efficient mc noma with imperfect channel state information"
    - "improved decoding and error floor analysis of staircase codes"
    - "performance analysis of a hybrid downlink uplink cooperative noma scheme"
    - "on non orthogonal multiple access with finite alphabet inputs in z channels"
    - "power domain non orthogonal multiple access noma in 5g systems potentials and challenges"

Connected through hyperedge HE-5 (induced by source paper "saddlepoint approximations for short packet wireless communications"):
  with members:
    - "secure short packet communications for mission critical iot applications"
    - "efficient error correcting codes in the short blocklength regime"
    - "5g wireless network slicing for embb urllc and mmtc a communication theoretic view"
    - "short packets over block memoryless fading channels pilot assisted or noncoherent transmission"
    - "joint sum rate and error probability optimization finite blocklength analysis"
    - "coherent multiple antenna block fading channels at finite blocklength"
    - "on single antenna rayleigh block fading channels at finite blocklength"
    - "coding in the finite blocklength regime bounds based on laplace integrals and their asymptotic approximations"

Connected through hyperedge HE-6 (induced by source paper "secure short packet communications for mission critical iot applications"):
  with members:
    - "wiretap channels nonasymptotic fundamental limits"
    - "joint sum rate and error probability optimization finite blocklength analysis"
    - "finite blocklength bounds for wiretap channels"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "finite block length analysis of the incremental redundancy harq"
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "ultra reliable communication in 5g wireless systems"
    - "non asymptotic output statistics of random binning and its applications"

Connected through hyperedge HE-7 (induced by source paper "physical layer security for ultra reliable and low latency communications"):
  with members:
    - "ultra reliable and low latency communications in 5g downlink physical layer aspects"
    - "ultra reliable low latency cellular networks use cases challenges and approaches"
    - "location based beamforming for enhancing secrecy in rician wiretap channels"
    - "analysis of short blocklength codes for secrecy"
    - "ber based physical layer security with finite codelength combining strong converse and error amplification"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "on secrecy above secrecy capacity"

Connected through hyperedge HE-8 (induced by source paper "beamforming design and power allocation for secure transmission with noma"):
  with members:
    - "joint beamforming and power allocation in downlink noma multiuser mimo networks"
    - "exploiting inter user interference for secure massive non orthogonal multiple access"
    - "robust and secure resource allocation for full duplex miso multicarrier noma systems"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "optimal joint power and subcarrier allocation for mc noma systems"
    - "secrecy sum rate maximization in non orthogonal multiple access"
    - "artificial noise aided secure transmission in wiretap channels with transmitter side correlation"
    - "on the spectral efficiency and security enhancements of noma assisted multicast unicast streaming"

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)