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Title: Coalitional games for downlink multicell beamforming
Authors: Wu, Yu
Deligiannis, Anastasios
Lambotharan, Sangarapillai
Keywords: Downlink beamforming
Power minimization
Nash equilibrium
Coalitional game
Issue Date: 2017
Publisher: © The Authors. Published by Institute of Electrical and Electronics Engineers (IEEE)
Citation: WU, Y., DELIGIANNIS, A. and LAMBOTHARAN, S., 2017. Coalitional games for downlink multicell beamforming. IEEE Access, In Press.
Abstract: A coalitional game is proposed for multi-cell multiuser downlink beamforming. Each base station intends to minimize its transmission power while aiming to attain a set of target signal-to-interference-plus-noise-ratio (SINRs) for its users. In order to reduce power consumption, base stations have incentive to cooperate with other base stations to mitigate intercell interference. The coalitional game is introduced where base stations are allowed to forge partial cooperation rather than full cooperation. The partition form coalitional game is formulated with the consideration that beamformer design of a coalition depends on the coalition structure outside the considered coalition. We first formulate the beamformer design for a given coalition structure, in which base stations in a coalition greedily minimize the total weighted transmit power without considering interference leakage to users in other coalitions. This can be considered as a non-cooperative game with each player as a distinct coalition. By introducing cost for cooperation, the coalition formation game is considered for the power minimization based beamforming. A merge-regret based sequential coalition formation algorithm has been developed that is capable of reaching a unique stable coalition structure. Finally, an α-Modification algorithm has been proposed to improve the performance of the coalition formation algorithm.
Description: This is an Open Access Article. It is published by IEEE under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/
Sponsor: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) of the UK under Grant EP/M015475/1.
Version: Accepted for publication
DOI: 10.1109/ACCESS.2017.2702058
URI: https://dspace.lboro.ac.uk/2134/25005
Publisher Link: https://doi.org/10.1109/ACCESS.2017.2702058
ISSN: 2169-3536
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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