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A coalitional game‐based integrated framework for optimal power allocation in multirelay cooperative environment
Author(s) -
Lamba Amanjot Kaur,
Kumar Ravi,
Sharma Sanjay
Publication year - 2017
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.3409
Subject(s) - stackelberg competition , computer science , relay , resource allocation , game theory , throughput , nash equilibrium , mathematical optimization , wireless , incentive , power (physics) , computer network , distributed computing , telecommunications , microeconomics , economics , physics , mathematics , quantum mechanics
Summary Cooperative relaying has emerged as an efficient transmit strategy in wireless networks affected by fading. In multirelay scenarios, the performance of cooperative systems is heavily influenced by resource allocation among the available relays. However, in practical scenarios, a relay may not help unless the cooperation improves its own utility. To address the above problem, this paper introduces a novel integrated game‐theoretic framework that involves incentive‐based optimal power allocation among the cooperating relays. Coalition formation game has been used to model the cooperation among relays that is integrated into a Stackelberg game, for considering the benefits of source and relays jointly. The game theoretic framework has been implemented with an objective to find an optimal and stable coalition set of relays that not only maximizes their utilities but also helps the source to allocate the optimal power to the relays at the optimal price, thereby increasing its utility too. Simulation results have confirmed that the proposed game theoretic solutions achieve comparable performance in system throughput as compared with the centralized approach.