Pilot Signal Design for Massive MIMO Systems: A Received Signal-To-Noise-Ratio-Based Approach

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In this letter, the pilot signal design for massive MIMO systems to maximize the training-based received signal-to-noise ratio (SNR) is considered under two channel models: block Gauss-Markov and block independent and identically distributed (i.i.d.) channel models. First, it is shown that under the block Gauss-Markov channel model, the optimal pilot design problem reduces to a semi-definite programming (SDP) problem, which can be solved numerically by a standard convex optimization tool. Second, under the block i.i.d. channel model, an optimal solution is obtained in closed form. Numerical results show that the proposed method yields noticeably better performance than other existing pilot design methods in terms of received SNR.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2015-05
Language
English
Article Type
Article
Keywords

WIRELESS; ANTENNAS

Citation

IEEE SIGNAL PROCESSING LETTERS, v.22, no.5, pp.549 - 553

ISSN
1070-9908
DOI
10.1109/LSP.2014.2364180
URI
http://hdl.handle.net/10203/198962
Appears in Collection
EE-Journal Papers(저널논문)
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