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Non-uniform directional dictionary-based limited feedback for massive MIMO systems

Alevizos Panagiotis, Fu Xiao, Sidiropoulos, N. D, Yang Ye, Bletsas Aggelos

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URIhttp://purl.tuc.gr/dl/dias/D5C535F1-9F55-459E-905C-C80834268E35-
Identifierhttps://ieeexplore.ieee.org/document/7959904/-
Identifierhttps://doi.org/10.23919/WIOPT.2017.7959904-
Languageen-
TitleNon-uniform directional dictionary-based limited feedback for massive MIMO systemsen
CreatorAlevizos Panagiotisen
CreatorΑλεβιζος Παναγιωτηςel
CreatorFu Xiaoen
CreatorSidiropoulos, N. Den
CreatorYang Yeen
CreatorBletsas Aggelosen
CreatorΜπλετσας Αγγελοςel
PublisherInstitute of Electrical and Electronics Engineersen
Content SummaryThis work proposes a new limited feedback channel estimation framework. The proposed approach exploits a sparse representation of the double directional wireless channel model involving an over complete dictionary that accounts for the antenna directivity patterns at both base station (BS) and user equipment (UE). Under this sparse representation, a computationally efficient limited feedback algorithm that is based on single-bit compressive sensing is proposed to effectively estimate the downlink channel. The algorithm is lightweight in terms of computation, and suitable for real-time implementation in practical systems. More importantly, under our design, using a small number of feedback bits, very satisfactory channel estimation accuracy is achieved even when the number of BS antennas is very large, which makes the proposed scheme ideal for massive MIMO 5G cellular networks. Judiciously designed simulations reveal that the proposed algorithm outperforms a number of popular feedback schemes in terms of beam forming gain for subsequent downlink transmission, and reduces feedback overhead substantially when the BS has a large number of antennas. en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-05-08-
Date of Publication2017-
SubjectChannel estimationen
SubjectMIMOen
SubjectDownlinken
SubjectChannel modelsen
SubjectAntenna feedsen
SubjectTrainingen
Bibliographic CitationP. N. Alevizos, X. Fu, N. D. Sidiropoulos, Y. Yang and A. Bletsas, "Non-uniform directional dictionary-based limited feedback for massive MIMO systems," in 15th International Symposium on Modeling and Optimization in Mobile, 2017. doi: 10.23919/WIOPT.2017.7959904 en

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