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Effective Interference Alignment for Device-to-Device Communication Underlaid in Multi-Cell Interference Network
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 Title & Authors
Effective Interference Alignment for Device-to-Device Communication Underlaid in Multi-Cell Interference Network
Qu, Xin; Kang, Chung Gu;
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 Abstract
We consider the device-to-device (D2D) communication underlaying multi-cell interference system, in which the cellular downlink (DL) resource is reused by K cells and two D2D transmission links within each cell. In this paper, it has been shown that the downlink intra-cell and inter-cell interference can be effectively handled by interference alignment (IA) technique, as long as the simultaneous D2D links are properly selected or power-controlled so that they may not incur interference to the base stations in the same and neighbor cells. In particular, we provides the IA technique that can achieve the theoretically maximum possible degree of freedom (DOF), demonstrating that a total of (K+1)M degrees of freedom (DOFs) can be achieved for K-cell interference system with two underlaying D2D links, where base stations, cellular UE's, and D2D UE's all have M transmit and receive antennas.
 Keywords
Device-to-Device (D2D) Communication;Cellular System;Interference Alignment;Degree of Freedom (DOF);
 Language
Korean
 Cited by
 References
1.
Y. J. Hwang, K. W. Sung, S.-L. Kim, "Feasibility of Massive Device-to-Device Communications in Cellular Networks," J. KICS, vol. 37B, no. 12, pp. 1091-1101, Dec. 2012. crossref(new window)

2.
V. Cadambe and S. Jafar, "Interference alignment and the degrees of freedom of the K user interference channel," IEEE Trans. Inform. Theory, vol. 54, no. 8, pp. 3425-3441, Aug. 2008. crossref(new window)

3.
G. Bresler, D. Cartwright, and D. Tse, "Settling the feasibility of interference alignment for the MIMO interference channel: the symmetric square case," preprint, http://arxiv.org/abs/1104.0888, Apr. 2011.