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Robust Transceiver Design Based on Joint Signal and Interference Alignment for MIMO Interference Channels With Imperfect Channel Knowledge

Authors
Kim, Myeong-JinLee, Hyun-HoKo, Young-Chai
Issue Date
11월-2014
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Robust scheme; imperfect channel knowledge
Citation
IEEE COMMUNICATIONS LETTERS, v.18, no.11, pp.2035 - 2038
Indexed
SCIE
SCOPUS
Journal Title
IEEE COMMUNICATIONS LETTERS
Volume
18
Number
11
Start Page
2035
End Page
2038
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/96884
DOI
10.1109/LCOMM.2014.2356467
ISSN
1089-7798
Abstract
In this letter, we propose a new transceiver design based on joint signal and interference alignment, which provides the robustness against imperfect channel knowledge in multiple-input multiple-output (MIMO) interference channels. Under the assumption of norm-bounded channel uncertainties, the proposed robust transceiver design minimizes the interference signals that leak outside the interference subspace and makes the desired signal fall into the orthogonal complement of the interference subspace. From simulation results, we demonstrate that our proposed robust transceiver design offers not only better sum rate performance but also higher robustness against imperfect channel knowledge than the conventional scheme.
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