Abstract
In this chapter, we consider the joint subchannel and power allocation problem in both the uplink and the downlink for two-tier networks comprising spectrum-sharing macrocells and femtocells. A joint subchannel and power allocation scheme for co-channel femtocells is proposed, aiming to maximize the capacity for delay-tolerant users subject to delay-sensitive users’ quality of service and interference constraints imposed by macrocells. The joint subchannel and power allocation problem is modeled as a mixed integer programming problem, then transformed into a convex optimization problem by relaxing subchannel sharing, and finally solved by a dual decomposition approach. The effectiveness of the proposed approach is verified by simulations and compared with existing scheme.
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Acknowledgements
The authors would like to thank Dr. David López-Pérez, Prof. Meixia Tao and Prof. Arumugam Nallanathan for their contributions and helpful discussions. This work was supported by the Co-building Project of Beijing Municipal Education Commission “Research on Resource Allocation and Scheduling Strategy of Future Wireless Communication System” and “Multi-Agent Multimedia Cooperative Communications Platform”, Key Fund of Beijing Key Laboratory on Future Network Research, the National Natural Science Foundation of China (61101109), and National Key Technology R&D Program of China (2010ZX03003-001-01, 2011ZX03003-002-01).
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Zhang, H., Chu, X., Wen, X. (2013). Resource Allocation in Femtocells with Cross-Tier Interference Limits. In: 4G Femtocells. SpringerBriefs in Computer Science. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9080-7_4
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DOI: https://doi.org/10.1007/978-1-4614-9080-7_4
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