Resource Allocation for Cognitive Small Cell Networks: A Cooperative Bargaining Game Theoretic Approach
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- 26 February 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 14 (6), 3481-3493
- https://doi.org/10.1109/twc.2015.2407355
Abstract
Cognitive small cell networks have been envisioned as a promising technique for meeting the exponentially increasing mobile traffic demand. Recently, many technological issues pertaining to cognitive small cell networks have been studied, including resource allocation and interference mitigation, but most studies assume non-cooperative schemes or perfect channel state information (CSI). Different from the existing works, we investigate the joint uplink subchannel and power allocation problem in cognitive small cells using cooperative Nash bargaining game theory, where the cross-tier interference mitigation, minimum outage probability requirement, imperfect CSI and fairness in terms of minimum rate requirement are considered. A unified analytical framework is proposed for the optimization problem, where the near optimal cooperative bargaining resource allocation strategy is derived based on Lagrangian dual decomposition by introducing time-sharing variables and recalling the Lambert-W function. The existence, uniqueness, and fairness of the solution to this game model are proved. A cooperative Nash bargaining resource allocation algorithm is developed, and is shown to converge to a Pareto-optimal equilibrium for the cooperative game. Simulation results are provided to verify the effectiveness of the proposed cooperative game algorithm for efficient and fair resource allocation in cognitive small cell networks.Keywords
Funding Information
- SUTD-MIT International Design Centre (IDSF1200106OH)
- A*STAR SERC (Grant 1224104048)
- National Natural Science Foundation of China (61471025, 61371079)
- Interdisciplinary Research Project in BUCT
- Fundamental Research Funds for the Central Universities (ZY1426)
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