When massive MIMO technology is combined with dense heterogeneous networks (HetNets), the user association and power allocation problems are fundamentally different although the energy- efficiency benefits can be intensified. This paper aims to investigate the energy efficient joint user association and power allocation problem in downlink massive MIMO empowered dense HetNets under proportional fairness criterion. The joint optimization problem is a non-convex mixed-integer nonlinear program (MINLP) which is NP-hard, and hence it is difficult to efficiently obtain exact solution. In order to obtain the highquality suboptimal solution, the joint optimization problem is first decomposed into two subproblems with alternating iterative method. Then a two-layer iterative suboptimal algorithm is proposed to solve the joint optimization problem with guaranteed convergence. The involved association subproblem adopts dual decomposition to achieve the optimal association index, whilst the power allocation subproblem allocates the transmit power of each BS with Newton's method. Numerical results verify the effectiveness of our proposed algorithm and show that our proposed algorithm outperforms conventional association schemes in the enhancement of energy efficiency performance. Furthermore, it can be seen that the energy efficiency performance is enhanced by increasing the number of antennas at macro base station (MBS).


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Energy Efficient Joint User Association and Power Allocation Design in Massive MIMO Empowered Dense HetNets


    Contributors:
    Lin, Yan (author) / Wang, Yi (author) / Li, Chunguo (author) / Huang, Yongming (author) / Yang, Luxi (author)


    Publication date :

    2016-09-01


    Size :

    311649 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Fuzzy-Based Joint User Association and Resource Allocation in HetNets

    Alnoman, Ali / Ferdouse, Lilatul / Anpalagan, Alagan | IEEE | 2017


    Coded Caching for Energy Efficient HetNets with Bandwidth Allocation and User Association

    Yin, Fangfang / Zeng, Minyin / Zhang, Zhilong et al. | IEEE | 2019


    On the Resource Allocation in HetNets with Massive MIMO Wireless Backhaul

    Hamdi, Rami / Driouch, Elmahdi / Ajib, Wessam | IEEE | 2018



    Joint User Association and Power Control for Area Spectral Efficiency Maximization in HetNets

    Aboagye, Sylvester / Ibrahim, Ahmed / Ngatched, Telex M. N. et al. | IEEE | 2020