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http://dx.doi.org/10.4218/etrij.11.0110.0141

Downlink Transmit Power Allocation in Soft Fractional Frequency Reuse Systems  

Kim, Dong-Hee (Department of Electrical Engineering, Jeonju University)
Ahn, Jae-Young (Internet Research Laboratory, ETRI)
Kim, Ho-Joon (Department of Electrical Engineering, Jeonju University)
Publication Information
ETRI Journal / v.33, no.1, 2011 , pp. 1-5 More about this Journal
Abstract
Downlink transmit power allocation schemes are proposed for soft fractional frequency reuse (FFR) in loose and tightly coordinated systems. The transmit powers are allocated so that the loss of spectral efficiency from the soft FFR is minimized, and the required cell edge user throughput is guaranteed. The effect of the soft FFR on spectral efficiency is evaluated depending on the power allocation schemes and the number of subbands. Results show that the loss of spectral efficiency from the soft FFR can be reduced by configuring an appropriate number of subbands in the loosely coordinated systems. In tightly coordinated systems, results show that the loss of spectral efficiency can be minimized regardless of the number of subbands due to its fast coordination.
Keywords
Spectral efficiency; fractional frequency reuse; intercell interference; power allocation; cellular systems;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 3
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1 3GPP2 Contribution, "Evaluation Methodology Document," ftp:// ftp.3gpp2.org/TSGC/Working/2008/2008-05-Osaka/TSG-C-2008- 05-Osaka/WG3/C30-20080512-016A-Evaluation%20methodology% 20text%20V8.zip, May 2008.
2 D. Gesbert et al., "Adaptation, Coordination, and Distributed Resource Allocation in Interference-Limited Wireless Networks," Proc. IEEE, vol. 95, no. 12, Dec. 2007, pp. 2393-2409.   DOI
3 A. Gjendemsjo et al., "Optimal Power Allocation and Scheduling for Two-Cell Capacity Maximization," 4th Int. Symp. Modeling Optimization Mobile, Ad Hoc, Wireless Netw., Apr. 2006, pp. 1-6.
4 S. Hamouda et al., "Dynamic Hard Fractional Frequency Reuse for Mobile WiMAX," IEEE Int. Conf. PerCom, 2009, pp. 1-6.
5 J. Huiling et al., "On the Performance of IEEE 802.16 OFDMA System under Different Frequency Reuse and Subcarrier Permutation Patterns," IEEE ICC, 2007, pp. 5720-5725.
6 M. Necker, "Interference Coordination in Cellular OFDMA Networks," IEEE Netw., vol. 22, no. 6, Dec. 2008, pp. 12-19.
7 S.H. Ali and V.C.M. Leung, "Dynamic Frequency Allocation in Fractional Frequency Reused OFDMA Networks," IEEE Trans. Wireless Commun., vol. 8, no. 8, Aug. 2009, pp. 4286-4295.   DOI
8 M.M. Wang et al., "Interference Management and Handoff Techniques in Ultra Mobile Broadband Communication Systems," IEEE 10th Int. Symp. Spread Spectrum Techniques Appl., Aug. 2008, pp. 166-172.
9 H. Fujii and H. Yoshino, "Theoretical Capacity and Outage Rate of OFDMA Cellular System with Fractional Frequency Reuse," IEEE Vehicular Technol. Conf., May 2008, pp. 1676-1680.
10 K. Doppler, C. Wijting, and K. Valkealahti, "Interference Aware Scheduling for Soft Frequency Reuse," IEEE 69th Vehicular Technol. Conf., Apr. 2009, pp. 1-5.
11 A.L. Stolyar and H. Viswanathan, "Self-Organizing Dynamic Fractional Frequency Reuse for Best-Effort Traffic through Distributed Inter-Cell Coordination," IEEE INFOCOM, 2009, pp. 1287-1295.
12 R. Giuliano et al., "Fractional Frequency Reuse Planning for WiMAX over Frequency Selective Channels," Int. Wireless Commun. Mobile Computing Conf., Aug. 2008, pp. 666-671.
13 A.L. Stolyar and H. Viswanathan, "Self-Organizing Dynamic Fractional Frequency Reuse in OFDMA Systems," IEEE 27th Conf. Computer Commun., April 2008, pp. 691- 699.