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    Approach for power allocation in two-tier femtocell networks based on robust non-cooperative game

    Access Status
    Fulltext not available
    Authors
    Liu, Z.
    Li, S.
    Yang, H.
    Chan, Kit Yan
    Guan, X.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Liu, Z. and Li, S. and Yang, H. and Chan, K.Y. and Guan, X. 2017. Approach for power allocation in two-tier femtocell networks based on robust non-cooperative game. IET Communications. 11 (10): pp. 1549-1557.
    Source Title
    IET Communications
    DOI
    10.1049/iet-com.2016.1055
    ISSN
    1751-8628
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/56950
    Collection
    • Curtin Research Publications
    Abstract

    In this study, a power allocation scheme for two-tier femtocell networks is proposed to maximise the user utilities constrained with satisfactory quality of service, where femtocell users share the same frequency with macrocell users (MUEs). Since the environment changes and the channel gains cannot be assumed to be constants, a worst-case method is used to address the uncertainty of the power allocation problem. A non-cooperative game model is developed to maximise the utilities of femtocell users by letting the users competing the utilities with others. As the robustness can be affected by the changing gains of communication links, the robust Stackelberg game is proposed to model this hierarchical competition where the MUEs and femtocell users act as leaders and followers, respectively. Two effective pricing schemes are applied to maximise the utilities, when different user demands are required, where the uniqueness of Nash equilibrium is proved in the two schemes. Numerical results show the convergence of the Stackelberg game with uncertainty and also the results demonstrate the effectiveness of the power allocation algorithm.

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