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Downlink Interference Alignment in Two-Tier Femtocell Networks

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Abstract

Femtocell networks have recently been widely investigated due to their effective commercial deployment by different operators. However, cross-tier interference between the two layers needs wise treatment. A recently developed area of research for interference management is called interference alignment (IA) where data and interference subspaces are separated at each receiver so that the network can achieve its deserved degrees of freedom (DOF). Although both femtocells and IA are individually attractive topics for many recent researches, the convergence point of these two lines of activities in which femtocells incorporate IA to reduce cross-tier interference impacts on the sum capacity of the network, has not received much attention yet. In this paper, we propose a structured framework for interference alignment in a femtocell overlaid cellular network with shared frequency channels where for the first time we also consider coverage area of each transmission. The algorithm captures proper participants for each individual alignment so that the strongest interfering nodes are removed at each receiver’s side. Considering this constraint enables us to evaluate a more realistic ad-hoc interference alignment analytically where femtocells and macrocell users are scattered uniformly in the cell. We investigated three different femtocell channel selection scenarios including random baseline, max–min distance and min–average interference schemes. Using simulation, we verify our analytical results and obtain a comprehensive plot of the performance versus different simulation parameters. We also show that our proposed IA deployed network is superior to conventional two-tier networks in terms of cross-tier interference.

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References

  1. Chandrasekhar, V., Andrews, J. G., & Gatherer, A. (2008). Femtocell networks: A survey. IEEE Communication Magazine, 46(9), 59–67.

    Article  Google Scholar 

  2. Guvenc, I. (2009). Statistics of macrocell-synchronous femtocell-asynchronous users delays for improved femtocell uplink receiver design. IEEE Communications Letters, 13(14), 239–241.

    Article  Google Scholar 

  3. Simeone, O., & Erkip, E. (2010). Robust transmission and interference management for femtocells with unreliable network access. IEEE Journal on Selected Areas in Communication, 28(9), 1469–1478.

    Article  Google Scholar 

  4. Ho, L. T. W. O., & Claussen, H. (2007). Effects of user-deployed co-channel femtocells on the call drop probability in a residential scenario. In IEEE 18th international symposium on personal, indoor and mobile radio communication (PIMRC) (pp. 1–5).

  5. Lopez-Perez, D., Valcarce, A., De La Roche, G., Liu, E., & Zhang, J. (2008). Access methods to WiMAX femtocells: A downlink system-level case study. In IEEE international conference on communication system (ICCS) (pp. 1657–1662).

  6. Chandrasekhar, V., Kountouris, M., & Andrews, J. G. (2009). Coverage in multi-antenna two-tier networks. IEEE Transactions on Wireless Communications, 8(10), 5314–5327.

    Article  Google Scholar 

  7. Chandrasekhar, V., Andrews, J. G., Muharemovic, T., Shen, Z., & Gatherer, A. (2009). Power control in two-tier femtocell networks. IEEE Transactions on Wireless Communications, 8(8), 4316–4328.

    Article  Google Scholar 

  8. Chandrasekhar, V., & Andrews, J. G. (2009). Spectrum allocation in tiered cellular networks. IEEE Transactions on Communications, 57(10), 3059–3068.

    Article  Google Scholar 

  9. Cheung, W. C., Quek, T. Q. S., & Kountouris, M. (2012). Throughput optimization, spectrum allocation, and access control in two-tier femtocell networks. IEEE Journal of Selected Areas in Communications, 30(3), 561–574.

    Article  Google Scholar 

  10. Chandrasekhar, V., & Andrews, J. G. (2009). Uplink capacity and interference avoidance for two-tier femtocell networks. IEEE Transactions on Wireless Communications, 8(7), 3498–3509.

    Article  Google Scholar 

  11. Cadambe, V. R., & Jafar, S. A. (2008). Interference alignment and spatial degrees of freedom for the K user interference channel. In IEEE international conference on communications (ICC) (pp. 971–975).

  12. Choi, S. W., Jafar, S. A., & Chung, S. Y. (2009). On the beamforming design for efficient interference alignment. IEEE Communication Letters, 13(11), 847–849.

    Article  Google Scholar 

  13. Gomadam, K. S., Cadambe, V. R., & Jafar, S. A. (2008). Approaching the capacity of wireless networks through distributed interference alignment. In Proceedings of IEEE GLOBECOM conference (pp. 1–6).

  14. Bolcskei, H., & Thukral, I. J. (2009). Interference alignment with limited feedback. In IEEE international symposium on information theory, 2009, ISIT 2009 (pp. 1759–1763).

  15. Jafar, S. (2010). Exploiting channel correlations—simple interference alignment schemes with no csit. In IEEE GlobeCom (pp. 1–5).

  16. Ali, M. A., Motahari, S. A., & Khandani, A. K. (2008). Communication over MIMO X channels: Interference alignment, decomposition, and performance analysis. Transactions on Information Theory, 54(8), 3457–3470.

    Article  MathSciNet  Google Scholar 

  17. Tresch, R., & Guillaud, M. (2009). Clustered interference alignment in large cellular networks. In 2009 IEEE 20th international symposium on personal, indoor and mobile radio communications (pp. 1024–1028).

  18. Tresch, R., & Guillaud, M. (2010). Performance of interference alignment in clustered wireless ad hoc networks. In 2010 IEEE international symposium on information theory proceedings (ISIT) (pp. 1703–1707).

  19. Suh, C., & Tse, D. (2008). Interference alignment for cellular networks. In Proceedings of the 46th annual allerton conference on communication, control, and computing.

  20. Suh, C., Ho, M., & Tse, D. (2011). Downlink interference alignment. IEEE Transactions on Communication, 59(9), 2616–2626.

    Article  Google Scholar 

  21. Lv, H., Liu, T., Hou, X., & Yang, C. (2010). Adaptive interference alignment for femtocell networks. In IEEE 10th international conference on signal processing (ICSP) (pp. 1654–1657).

  22. Lertwiram, N., Popovski, P., & Sakaguchi, K. (2012). A study of trade-off between opportunistic resource allocation and interference alignment in femtocell scenarios. IEEE Wireless Communications Letters, 1(4), 356–359.

    Article  Google Scholar 

  23. Adhikary, A., Ntranos, V., & Caire, G. (2011). Cognitive femtocells: Breaking the spatial reuse barrier of cellular systems. In IEEE information theory and applications workshop (ITA) (pp. 1–10).

  24. Soh, Y. S., Quek, T. Q. S., Kountouris, M., & Caire, G. (2012). Flexible duplex for cognitive femtocells in two-tier networks. In IEEE Globecom.

  25. Barbieri, A., Damnjanovic, A., Ji, T., Montojo, J., Wei, Y., Malladi, D., et al. (2012). LTE femtocells: System design and performance analysis. IEEE Journal on Selected Areas in Communications, 30(3), 586–594.

    Article  Google Scholar 

  26. Guler, B., & Yener, A. (2011). Interference alignment for cooperative MIMO femto networks. In IEEE Globecom (pp. 1–5).

  27. Pantisano, F., Bennis, M., Saad, W., & Debbah, M. (2011). Cooperative interference alignment in femtocell networks. In IEEE Globecom (pp. 1–6).

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Authors and Affiliations

  1. Signal Processing and Communication Systems Laboratory, University of Tehran, Tehran, Iran

    Alireza Ghiamatyoun & Ali Olfat

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  1. Alireza Ghiamatyoun
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  2. Ali Olfat
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Correspondence to Ali Olfat.

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Ghiamatyoun, A., Olfat, A. Downlink Interference Alignment in Two-Tier Femtocell Networks. Wireless Pers Commun 82, 777–798 (2015). https://doi.org/10.1007/s11277-014-2252-7

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