Distributed Inter-Cell Interference Mitigation in OFDMA Wireless Data Networks
- 1 November 2008
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
We consider the problem of distributed inter-cell interference mitigation in multi-carrier wireless cellular networks. Assuming that neighboring base stations can be coordinated, we optimize the network weighted sum-rate via binary power control. The weights account for different priorities of mobile terminals, and are periodically updated to maintain proportional fairness. We design two distributed algorithms for inter-cell coordination which converge to a state where no base station can individually change its activity status to improve the weighted sum-rate of the network. Numerical results show that these algorithms achieve a significant throughput gain, especially for cell-edge users (up to 20%), compared to a conventional proportional fair scheduling algorithm without inter-cell coordination. Remarkably, the proposed distributed algorithms require limited feedback and achieve most of the throughput gain within few iterations.Keywords
This publication has 6 references indexed in Scilit:
- Binary Power Control for Sum Rate Maximization over Multiple Interfering LinksIEEE Transactions on Wireless Communications, 2008
- Self-Organizing Dynamic Fractional Frequency Reuse in OFDMA SystemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Maximizing Multicell Capacity Using Distributed Power Allocation and SchedulingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Interference Mitigation Through Power Control in High Density 802.11 WLANsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Distributed interference compensation for wireless networksIEEE Journal on Selected Areas in Communications, 2006
- Fundamentals of Wireless CommunicationPublished by Cambridge University Press (CUP) ,2005