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Multi-Cell Search Scheme for Heterogeneous Networks
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 Title & Authors
Multi-Cell Search Scheme for Heterogeneous Networks
Cho, Yong-Ho; Ko, Hak-lim; Im, Tae-ho;
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This paper introduces a multi-cell search method for heterogeneous networks (HetNet), in which user equipments need to search multiple cells in its vicinity simultaneously. Due to the difficulty of acquiring channel informations for multiple cells, a non-coherent approach is preferred. In this paper, a non-coherent single-cell search scheme using a weighted vector is proposed, and the successive interference cancellation based multi-cell search algorithm is devised. In order to improve cell search performance, the weighted vector is designed in a way to exploit the general characteristic of wireless channel. Based on the fact that the performance of the proposed single-cell search scheme deviates slowly from the one using the optimal weighted vector, a universal weighted vector is also proposed, which shows the performance close to the optimal ones for various channel environments and signal-to-noise ratio regimes. Simulation results confirm that the proposed multi-cell search algorithm is capable of identifying cells more accurately with the help of the proposed single-cell search scheme, and can detect the remaining cells more effectively by removing the signals of the identified cells from the received signal.
Cell Search;OFDM;LTE;HetNet;Cellular Network;
 Cited by
3GPP TR36.814 V9.0.0, Further advancements for E-UTRA physical layer aspects (Release 9), Mar. 2010.

C. S. Yang and C. G. Kang, "QoS-oriented user association in HetNet with a backhaul constraint," J. KICS, vol. 39B, no. 10, pp. 654-663, Oct. 2014.

Y. W. Blankenship, "Achieving high capacity with small cells in LTE-A," in 2012 50th Annu. Allerton Conf. Commun., Control, and Computing, pp. 1680-1687, Oct. 2012.

M. Stojanovic and L. Freitag, "Recent trends in underwater acoustic communications," Marine Technol. Soc. J., vol. 47, no. 5, pp. 45-50, Oct. 2013.

J. H. Kim, T. H. Im, K. Y. Kim, and H. L. Ko, "A study on the underwater base station based underwater acoustic communication systems," in Proc. KICS Int. Conf. Commun. 2015 (KICS ICC 2015), pp. 353-205, Jeju Island, Korea, Jun. 2010.

A. Prasad, O. Tirkkonen, P. Lunden, O. N. C. Yilmaz, L. Dalsgaard, and C. Wijting, "Energy-efficient inter-frequency small cell discovery techniques for LTE-advanced heterogeneous network deployments," IEEE Commun. Mag., vol. 51, no. 5, pp. 72-81, May 2013.

Y. J. Kim and Y. S. Cho, "Femtocell searching technique using synchronization signals for next-generation mobile communication systems," J. KICS, vol. 38A, no. 1, pp. 44-57, Jan. 2013.

M. S. Kim, D. Y. Cho, H. L. Ko, D. K. Hong, S. G. Kim, and T. H. Im, "A study on the multi-carrier system for throughput enhancement in underwater channel environments," J. KICS, vol. 40, no. 06, pp. 1193-1199, Jun. 2015.

H. S. Kim, T. H. Hong, and Y. S. Cho, "A cell selection technique considering MIMO precoding," J. KICS. vol. 37A, no. 12, pp. 1076-1084, Dec. 2012.

Y. Shen, T. Luo, and M. Z. Win, "Neighboring cell search for LTE systems," IEEE Trans. Wirel. Commun., vol. 11, no. 3, pp. 0908-919, Mar. 2012. crossref(new window)

W. Nam and Y. Lee, "Preamble-based cell identification for cellular OFDM systems," IEEE Trans. Wirel. Commun., vol. 7, no. 12, pp. 5263-5267, Dec. 2008. crossref(new window)

3GPP TR36.104 V13.1.0, Base Station (BS) radio transmission and reception, Sept. 2015.