[1] Peng Tianliang, Chen Yang,. A two-stage frequency-domain blind source separation methodfor underdetermined instantaneous mixtures [J]. Journal of Southeast University (English Edition), 2016, 32 (2): 135-140. [doi:10.3969/j.issn.1003-7985.2016.02.001]

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A two-stage frequency-domain blind source separation methodfor underdetermined instantaneous mixtures()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

32

Issue:

2016 2

Page:

135-140

Research Field:

Computer Science and Engineering

Publishing date:

2016-06-20

Info

Title:

A two-stage frequency-domain blind source separation methodfor underdetermined instantaneous mixtures

Author(s):

Peng Tianliang;  Chen Yang

School of Information Science and Engineering, Southeast University, Nanjing 210096, China

Keywords:

inverse truncated mixing matrix;  under-determined blind source separation(UBSS);  frequency domain;  matrix completion

PACS:

TP391

DOI:

10.3969/j.issn.1003-7985.2016.02.001

Abstract:

In order to decrease the probability of missing some data points or noises being added in the inverse truncated mixing matrix(ITMM)algorithm, a two-stage frequency-domain method is proposed for blind source separation of underdetermined instantaneous mixtures. The separation process is decomposed into two steps of ITMM and matrix completion in the view that there are many soft-sparse(not very sparse)sources. First, the mixing matrix is estimated and the sources are recovered by the traditional ITMM algorithm in the frequency domain. Then, in order to retrieve the missing data and remove noises, the matrix completion technique is applied to each preliminary estimated source by the traditional ITMM algorithm in the frequency domain. Simulations show that, compared with the traditional ITMM algorithms, the proposed two-stage algorithm has better separation performances. In addition, the time consumption problem is considered. The proposed algorithm outperforms the traditional ITMM algorithm at a cost of no more than one-fourth extra time consumption.

References:

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Memo

Memo:

Biographies: Peng Tianliang(1984—), male, graduate; Chen Yang(corresponding author), male, doctor, professor, cheny@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.60872074).
Citation: Peng Tianliang, Chen Yang. A two-stage frequency-domain blind source separation method for underdetermined instantaneous mixtures[J].Journal of Southeast University(English Edition), 2016, 32(2):135-140.doi:10.3969/j.issn.1003-7985.2016.02.001.

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