Browse > Article
http://dx.doi.org/10.3837/tiis.2014.05.001

Two-Tier Interference Elimination for Femtocells Based on Cognitive Radio Centralized Spectrum Management  

Yi, Leng-Gan (Department of Electronics and Information Engineering, Huazhong University of Science and Technology)
Lu, Yi-Min (Department of Electronics and Information Engineering, Huazhong University of Science and Technology)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.8, no.5, 2014 , pp. 1514-1531 More about this Journal
Abstract
Femtocell provides better coverage and higher spectrum efficiency in areas rarely covered by macrocells. However, serious two-tier interference emerging from randomly deploying femtocells may create dead zones where the service is unavailable for macro-users. In this paper, we present adopting cognitive radio spectrum overlay to avoid intra-tier interference and incorporating spectrum underlay and overlay to coordinate cross-tier interference. It is a novel centralized control strategy appropriate for both uplink and downlink transmission. We introduce the application of proper spectrum sharing strategy plus optimal power allocation to address the issue of OFDM-based femtocells interference-limited downlink transmission, along with, a low-complexity suboptimal solution proposed. Simulation results illustrate the proposed optimal scheme achieves the highest transmission rate on successfully avoiding two-tier interference, and outperforms the traditional spectrum underlay or spectrum overlay, via maximizing the opportunity to transmit. Moreover, the strength of our proposed schemes is further demonstrated by comparison with previous classic power allocation methods, in terms of transmission rate, computational complexity and signal peak-to-average power ratio.
Keywords
Cognitive radio; femtocell; interference elimination; OFDM; power allocation; spectrum management;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 P. T. Boggs and J. W. Tolle, "Sequential quadratic programming," Acta numerica, vol.4, no.1, pp. 1-51, 1995.   DOI
2 V. Chandrasekhar, J. G. Andrews and A. Gatherer, "Femtocell networks: a survey," IEEE Communications Magazine, vol.46, no.9, pp. 59-67, 2008.   DOI   ScienceOn
3 R. Y. Kim, J. S. Kwak and K. Etemad, "WiMAX femtocell: requirements, challenges, and solutions," IEEE Communications Magazine, vol.47, no.9, pp. 84-91, 2009.
4 V. Chandrasekhar, J. G. Andrews, T. Muharemovic, Z. K. Shen and A. Gatherer, "Power control in two-tier femtocell networks," IEEE Transactions on Wireless Communications, vol.8, no.8, pp. 4316-4328, 2009.   DOI   ScienceOn
5 D. W. Sun and B. Y. Zheng, "A Novel Resource Allocation Algorithm in Multi-media Heterogeneous Cognitive OFDM System," KSII Transactions on Internet and Information Systems, vol.4, no.5, pp. 691-708, 2010.
6 T. Jiang and Y. Wu, "An overview: Peak-to-Average Power Ratio reduction techniques for OFDM signals," IEEE Transactions on Broadcasting, vol.54, no.2, pp. 257-268, 2008.   DOI   ScienceOn
7 M. E. Sahin, I. Guvenc, M. Jeong and H. Arslan, "Handling CCI and ICI in OFDMA femtocell networks through frequency scheduling," IEEE Transactions on Consumer Electronics, vol.55, no.4, pp. 1936-1944, 2009.   DOI   ScienceOn
8 S. M. Cheng, S. Y. Lien, F. S. Chu and K. C. Chen, "On exploiting cognitive radio to mitigate interference in macro/femto heterogeneous networks," IEEE Wireless Com-munications, vol.18, no.3, pp. 40-47, 2011.
9 Q. Zhao and B. M. Sadler, "A Survey of Dynamic Spectrum Access," IEEE Signal Processing Magazine, vol.24, no.3, pp. 79-89, 2007.   DOI   ScienceOn
10 J. Mitola III, "Cognitive radio: An integrated agent architecture for software defined radio," Ph.D. dissertation, KTH Royal Institute of Technology, Stockholm, Sweden, 2000.
11 S. Haykin, "Cognitive radio: Brain-empowered wireless communications," IEEE Journal on Selected Areas in Communications, vol.23, no.2, pp. 201-220, 2005.   DOI   ScienceOn
12 J. Xiang, Y. Zhang, T. Skeie and L. Xie, "Downlink Spectrum Sharing for Cognitive Radio Femtocell Networks," IEEE Systems Journal, vol.4, no.4, pp. 524-534, 2010.   DOI   ScienceOn
13 S. Y. Lien, Y. Y. Lin and K. C. Chen, "Cognitive and Game-Theoretical Radio Resource Management for Autonomous Femtocells with QoS Guarantees," IEEE Transactions on Wireless Communications, vol.10, no.7, pp. 2196-2206, 2011.   DOI   ScienceOn
14 W. Wang, G. Yu and A. Huang, "Cognitive Radio Enhanced Interference Coordination for Femtocell Networks," IEEE Communications Magazine, vol.51, no.6, pp. 37-43, 2013.   DOI   ScienceOn
15 L. G. Yi, Y. M. Lu and T. P. Deng, "Facilitating current terminals accessing to cognitive radio networks," in Proc. of WiCOM, pp. 1-4, 2011.
16 T. Weiss, J. Hillenbrand, A. Krohn and F. K. Jondral, "Mutual interference in OFDM-based spectrum pooling systems," in Proc. of VTC-Spring, pp. 1873-1877, 2004.
17 G. Bansal, J. Hossain and V. K. Bhargava, "Optimal and suboptimal power allocation schemes for OFDM-based cognitive radio systems," IEEE Transactions on Wireless Communications, vol.7, no.11, pp. 4710-4718, 2008.   DOI   ScienceOn
18 G. Bansal, O. Duval and F. Gagnon, "Joint overlay and underlay power allocation scheme for OFDM-based cognitive radio systems," in Proc. of VTC-Spring, pp. 1-5, 2010.
19 S. P. Boyd and L. Vandenberghe, Convex Optimization, Cambridge University Press, 2004.
20 V. Chandrasekhar and J. G. Andrews, "Uplink capacity and interference avoidance for two-tier femtocell networks," IEEE Transactions on Wireless Communications, vol.8, no.7, pp. 3498-3509, 2009.   DOI   ScienceOn
21 M. Yavuz, F. Meshkati, S. Nanda, A. Pokhariyal, N. Johnson and B. Raghothaman, et al., "Interference Management and Performance Analysis of UMTS/HSPA+ Femtocells," IEEE Communications Magazine, vol.47, no.9, pp. 102-109, 2009.