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Type: Artigo de Periódico
Title: Low-overhead feedback topology design for the K-user MIMO interference alignment
Authors: Jin, Jin
Gao, Xiang-Chuan
Li, Xingwang
Cavalcante, Charles Casimiro
Li, Lihua
Keywords: Interference alignment;Channel state information;Feedback topology;Interference channel;Multiple-Input-Multiple-Output
Issue Date: 2018
Publisher: KSII Transactions on Internet and Information Systems
Citation: CAVALCANTE, C. C. et al. Low-overhead feedback topology design for the K-user MIMO interference alignment. KSII Transactions on Internet and Information Systems, vol. 12, n. 11, p. 5304-5322, 2018
Abstract: Since designing a feedback topology is a practical way to implement interference alignment at reduced cost of channel state information (CSI) feedback, six feedback topologies have been presented in prior works for a K-user multiple-input multiple-output interference channel. To fully reveal the potential benefits of the feedback topology in terms of the saving of CSI overhead, we propose a new feedback topology in this paper. By efficiently performing dimensionality-decreasing at the transmitter side and aligning interference signals at a subset of receivers, we show that the proposed feedback topology obtains substantial reduction of feedback cost over the existing six feedback designs under the same antenna configuration.
ISSN: 1976-7277
Appears in Collections:DETE - Artigos publicados em revista científica

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