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 "green communication via power optimized harq protocols"):
  Abstract: Recently, the efficient use of energy has become an essential research topic for green communication. This paper studies the effect of optimal power controllers on the performance of delay-sensitive communication setups that utilize hybrid automatic repeat request (HARQ). The results are obtained for repetition time diversity (RTD) and incremental redundancy (INR) HARQ protocols. In all cases, the optimal power allocation, minimizing the outage-limited average transmission power, is obtained under both continuous and bursting communication models. Also, we investigate the system throughput in different conditions. The results indicate that the power efficiency is substantially increased if adaptive power allocation is utilized. For example, assume a Rayleigh fading channel with a maximum of two (re)transmission rounds with rates {1, [1/2]} nats-per-channel-use and an outage probability constraint 10-3. Then, compared with uniform power allocation, optimal power allocation in RTD reduces the average power by 9 and 11 dB in the bursting and continuous communication models, respectively. In INR, these values are obtained to be 8 and 9 dB, respectively.

Includes members:
  Member "fundamental limits of cooperation":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "area spectral efficiency and sinr scaling laws in multi antenna cellular networks")
  Member "bit allocation law for multiantenna channel feedback quantization single user case":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "optimal shape gain quantization for multiuser mimo systems with linear precoding")
  Member "on the benefits of partial channel state information for repetition protocols in block fading channels":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "fast harq over finite blocklength codes a technique for low latency reliable communication")
  Member "hybrid arq in multiple antenna slow fading channels performance limits and optimal linear dispersion code design":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "on the required number of antennas in a point to point large but finite mimo system outage limited scenario")
  Member "performance of hybrid arq in block fading channels a fixed outage probability analysis":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "short packet transmission via variable length codes in the presence of noisy stop feedback")
  Member "capacity definitions of general channels with receiver side information":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "outage analysis of uplink two tier networks")

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)