Ordered Interference Alignment in MIMO Interference Channel with Limited Feedback 


Vol. 37,  No. 10, pp. 938-946, Oct.  2012


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  Abstract

Interference alignment (IA) is a data transmission technique that achieves the maximum degrees-of-freedom (DoF) in the multiuser interference channel for high signal-to-noise ratios (SNRs). However, most prior works on IA are based on the unrealistic assumption that perfect and global channel-state information (CSI) is available at all transmitters and receivers. In this paper, we propose the efficient design of feedback framework for IA that substantially suppresses the feedback overhead. While the feedback overhead in the conventional IA quadratically increases with K, the proposed feedback scheme supports the sequential exchange of computed IA precoders between transmitters and receivers and reduces the feedback overhead that linearly scales with K. Moreover, we analyze the residual interference due to the quantization error in limited feedback and propose the ordered IA algorithm that selects IA pair to minimize the sum residual interference in given channel realizations.

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  Cite this article

[IEEE Style]

S. Cho, M. Yang, J. Yang, D. K. Kim, "Ordered Interference Alignment in MIMO Interference Channel with Limited Feedback," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 10, pp. 938-946, 2012. DOI: .

[ACM Style]

Sungyoon Cho, Minho Yang, Janghoon Yang, and Dong Ku Kim. 2012. Ordered Interference Alignment in MIMO Interference Channel with Limited Feedback. The Journal of Korean Institute of Communications and Information Sciences, 37, 10, (2012), 938-946. DOI: .

[KICS Style]

Sungyoon Cho, Minho Yang, Janghoon Yang, Dong Ku Kim, "Ordered Interference Alignment in MIMO Interference Channel with Limited Feedback," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 10, pp. 938-946, 10. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880