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Downlink Power Allocation of the OFDMA Femtocell for Inter-cell Interference Mitigation  

Jung, Hyun-Duk (연세대학교 전기전자공학과 유비쿼터스 네트워크 연구실)
Lee, Jai-Yong (연세대학교 전기전자공학과 유비쿼터스 네트워크 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.8A, 2010 , pp. 743-751 More about this Journal
Abstract
OFDMA femtocell becomes an effective solution to support indoor high data rate services instead of the macrocell systems. Although the advantage of the femtocell, the co-channel interference between the femocell and the macrocell is the most significant problem that reduces the system performance. Macrocell users who have no permission to access the femtocell suffer from interference of the downlink transmission of femtocell. Therefore, the femtocell should use transmission power as small as possible to reduce interference to macrocell users. In this paper, we define the margin adaptive power allocation problem for the femtocell and propose a heuristic power allocation algorithm to solve the problem. Simulation results show the performance of the proposed algorithm.
Keywords
Femtocell; ODFMA; Power Allocation; Water Filling;
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1 S. Chieochan, and E. Hossain, "Adaptive radio resource allocation in OFDMA systems: a survey of the state-of-the-art approaches," Wireless Communications and Mobile Computing, Vol.9, No.4, pp.513-527 Apr., 2009.   DOI   ScienceOn
2 Y. Zhang, and C. Leung "Subchannel Power-Loading Schemes in Multiuser OFDM Systems," IEEE Transactions on Vehicular Technology, Vol.58, No.9, pp.5341-5347, Nov., 2009.   DOI
3 S. Chung, and A. Goldsmith "Degrees of freedom in adaptive modulation: A unified view," IEEE Transactions on Communications, Vol.49, No.9, pp.1561-1571, Sep., 2001.   DOI   ScienceOn
4 M. Yavuz, F. Meshkati, S. Nanda, A. Pokhariyal, N. Johnson, B. Raghothaman, and A. Richardson, "Interference Management and Performance Analysis of UMTS/HSPA+ Femtocells," IEEE Communications Magazine, Vol.47, No.9, pp.102-109, Sep., 2009.
5 H. Claussen, "Performance of macro- and co-channel femtocells in a hierarchical cell structure," in proceeding of IEEE PIMRC 2007, May., 2007, pp.1-5.
6 L. Xiaowen, and Zhu Jinkang "An adaptive subcarrier allocation algorithm for multiuser OFDM system," in proceeding of IEEE VTC 2003, Oct., 2003, pp.1502-1506.
7 B. Korte, and J. Vygen, Combinatorial Optimization Theory, Theory and Algorithms, Second Edition, Springer-Verlag, 2002.
8 C. Y. Wong, R. S. Cheng, K. B. Letaief, and Ross D. Murch, "Multiuser OFDM with adaptive subcarrier, bit, and power allocation," IEEE Journal on Selected Areas in Communications, Vol.17, No.10, pp.1747-1758, Oct., 1999.   DOI   ScienceOn
9 D. Kivanc, and Hui Liu "Subcarrier allocation and power control for OFDMA," in proceeding of IEEE CSSC 2000, Oct., 2000, pp. 147-151.
10 R. Gallager, Information Theory and Reliable Communication, Wiley, 1968.
11 V. Chandrasekhar, and J. G. Andrews, "Femtocell Networks: A Survey," IEEE Communications Magazine, Vol.46, No.9, pp.59-67, Sep., 2008.
12 D. Lopez-Perez, A. Valcarce, G. de la Roche, and J. Zhang, "OFDMA Femtocells: A Roadmap on Interference Avoidance," IEEE Communications Magazine, Vol.47, No.9, pp.41-48, Sep., 2009.