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Precoder design and blind identification of MIMO channels

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journal contribution
posted on 06.12.2017, 00:00 authored by W Su, WX Zheng, Li ChaiLi Chai
In this paper, blind identification problem based on second-order statistics (SOS) of received signals is investigated for multiple-input multiple-output (MIMO) channels. It is shown that precoders introduced in transmitters can provide certain extra information for blind identification problem and commonly used identifiability conditions on MIMO channels can be relaxed. A design criterion for the precoders in frequency domain is proposed. Two blind identification algorithms based on the knowledge of the precoders and SOS of the received signals are then developed. In these algorithms, due to particular structure of the precoders, the blind identification problem for a MIMO channel is decomposed into several independent single-input multiple-output (SIMO) channel identification problems. The presented algorithms are robust to an overestimated channel order and not sensitive to signal-to-noise ratio (SNR). Compared with the existing results, a larger class of MIMO finite-impulse-response (FIR) channels can be identified by the new methods.

Funding

Category 2 - Other Public Sector Grants Category

History

Volume

54

Issue

7

Start Page

2725

End Page

2736

Number of Pages

12

ISSN

1053-587X

Location

Piscataway, United States

Publisher

Institute of Electrical and Electronics Engineers Inc.

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Hangzhou Dianzi University; Not affiliated to a Research Institute; University of Western Sydney;

Era Eligible

Yes

Journal

IEEE transactions on signal processing.