A Low-Complexity Approximate Power Allocation in Ultra-Dense Network

  • Bei LiuEmail author
  • Jie Zeng
  • Xin Su
  • Xibin Xu
  • Limin Xiao
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 445)


This paper considers the power allocation to maximize the sum-rate of the users when the total allocated power is limited in the ultra-dense network (UDN). In the paper, we first regard the interference caused by the specified base station (BS) to the other mobile station (MS) as a constant, and obtain the expression of the allocated power of each BS. However, it is not a closed-form solution, we apply the classic water-filling algorithm to get the optimum power allocation by some times of iterations. Finally, the simulation results show that the power allocation scheme can greatly improve the sum-rate of the users compared to the average power allocation.


Ultra-dense network Water filling algorithm Sum-rate maximization 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Bei Liu
    • 1
    Email author
  • Jie Zeng
    • 2
  • Xin Su
    • 2
  • Xibin Xu
    • 2
  • Limin Xiao
    • 2
  1. 1.Broadband Wireless Access LaboratoryChongqing University of Posts and TelecommunicationsChongqingChina
  2. 2.Tsinghua National Laboratory for Information Science and Technology Research Institute of Information TechnologyTsinghua UniversityBeijingChina

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