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: "green communication via type i arq finite block length analysis"
  Abstract: This paper studies the effect of optimal power allocation on the performance of communication systems utilizing automatic repeat request (ARQ). Considering Type-I ARQ, the problem is cast as the minimization of the outage probability subject to an average power constraint. The analysis is based on some recent results on the achievable rates of finite-length codes and we investigate the effect of codewords length on the performance of ARQ-based systems. We show that the performance of ARQ protocols is (almost) insensitive to the length of the codewords, for codewords of length $\ge 50$ channel uses. Also, optimal power allocation improves the power efficiency of the ARQ-based systems substantially. For instance, consider a Rayleigh fading channel, codewords of rate 1 nats-per-channel-use and outage probability $10^{-3}.$ Then, with a maximum of 2 and 3 transmissions, the implementation of power-adaptive ARQ reduces the average power, compared to the open-loop communication setup, by 17 and 23 dB, respectively, a result which is (almost) independent of the codewords length. Also, optimal power allocation increases the diversity gain of the ARQ protocols considerably.

Connected through hyperedge HE-1 (induced by source paper "ultra reliable communication via optimum power allocation for harq retransmission schemes"):
  with members:
    - "effective capacity and power allocation for machine type communication"
    - "low latency short packet transmissions fixed length or harq"
    - "on the effective energy efficiency of ultra reliable networks in the finite blocklength regime"
    - "ultra reliable communication via optimum power allocation for type i arq in finite block length"
    - "short packet communications over multiple antenna rayleigh fading channels"
    - "energy efficient adaptive power allocation for incremental mimo systems"
    - "finite block length analysis of the incremental redundancy harq"
    - "ultra reliable communication in 5g wireless systems"

Connected through hyperedge HE-2 (induced by source paper "fast harq over finite blocklength codes a technique for low latency reliable communication"):
  with members:
    - "mimo channel modeling and capacity analysis for 5g millimeter wave wireless systems"
    - "modelling decoding errors in harq"
    - "green communication via power optimized harq protocols"
    - "finite block length analysis of the incremental redundancy harq"
    - "a tight upper bound for the third order asymptotics for most discrete memoryless channels"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "on the benefits of partial channel state information for repetition protocols in block fading channels"
    - "performance of hybrid arq in block fading channels a fixed outage probability analysis"

Connected through hyperedge HE-3 (induced by source paper "performance of viterbi decoding with and without arq on rician fading channels"):
  with members:
    - "performance of viterbi decoding on interleaved rician fading channels"
    - "on gaussian macs with variable length feedback and non vanishing error probabilities"
    - "variable length convolutional coding for short blocklengths with decision feedback"
    - "finite block length analysis of the incremental redundancy harq"
    - "reliability output decoding of tail biting convolutional codes"
    - "channel polarization a method for constructing capacity achieving codes for symmetric binary input memoryless channels"

Connected through hyperedge HE-4 (induced by source paper "ultra reliable communication via optimum power allocation for type i arq in finite block length"):
  with members:
    - "understanding the iot connectivity landscape a contemporary m2m radio technology roadmap"
    - "energy efficient adaptive power allocation for incremental mimo systems"
    - "finite block length analysis of the incremental redundancy harq"
    - "ultra reliable communication in 5g wireless systems"
    - "quasi static multiple antenna fading channels at finite blocklength"

Connected through hyperedge HE-5 (induced by source paper "coding in the finite blocklength regime bounds based on laplace integrals and their asymptotic approximations"):
  with members:
    - "exact asymptotics for the random coding error probability"
    - "on the evaluation of the polyanskiy poor verdu converse bound for finite block length coding in awgn"
    - "the third order term in the normal approximation for the awgn channel"
    - "mismatched decoding error exponents second order rates and saddlepoint approximations"
    - "the log volume of optimal codes for memoryless channels asymptotically within a few nats"
    - "moderate deviations in channel coding"

Connected through hyperedge HE-6 (induced by source paper "delay performance of wireless communications with imperfect csi and finite length coding"):
  with members:
    - "on the delay performance of interference channels"
    - "finite block length analysis of the incremental redundancy harq"
    - "quasi static simo fading channels at finite blocklength"
    - "throughput of cognitive radio systems with finite blocklength codes"
    - "diversity versus channel knowledge at finite block length"
    - "multiuser mimo achievable rates with downlink training and channel state feedback"

Connected through hyperedge HE-7 (induced by source paper "energy efficient packet scheduling with finite blocklength codes convexity analysis and efficient algorithms"):
  with members:
    - "towards massive ultra reliable and low latency wireless the art of sending short packets"
    - "what will 5g be"
    - "finite block length analysis of the incremental redundancy harq"
    - "throughput of cognitive radio systems with finite blocklength codes"
    - "five disruptive technology directions for 5g"
    - "quasi static multiple antenna fading channels at finite blocklength"

Connected through hyperedge HE-8 (induced by source paper "on the performance of the relay arq networks"):
  with members:
    - "green communication via power optimized harq protocols"
    - "lecture notes on network information theory"
    - "distributed power allocation strategies for parallel relay networks"

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)