A Two-Stage MMSE Beamformer for Underdetermined Signal Separation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F13%3A00424112" target="_blank" >RIV/67985556:_____/13:00424112 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/13:#0002868
Result on the web
<a href="http://dx.doi.org/10.1109/LSP.2013.2285932" target="_blank" >http://dx.doi.org/10.1109/LSP.2013.2285932</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/LSP.2013.2285932" target="_blank" >10.1109/LSP.2013.2285932</a>
Alternative languages
Result language
angličtina
Original language name
A Two-Stage MMSE Beamformer for Underdetermined Signal Separation
Original language description
Blind separation of underdetermined instantaneous mixtures is a popular solution to inverse problems encountered in audio or biomedical applications where the number of sources exceeds the number of sensors. There are two non-equivalent tasks: to identify the mixing matrix and to separate the original sources. In this paper, we focus on the latter task by proposing a novel beamformer that minimizes the theoretical mean square error distance between the separated and original signals. The beamformer hastwo stages: one for the estimation of signals and one for their refinement. Within the former stage, the signals are assumed to be random and locally stationary, while the latter stage is based on a semi-deterministic model. The experiments prove superior performance of the proposed method compared to conventional MMSE beamforming.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BB - Applied statistics, operational research
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP103%2F11%2F1947" target="_blank" >GAP103/11/1947: Methods of Latent Variable Analysis in Blind Speech and Audio Processing</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE Signal Processing Letters
ISSN
1070-9908
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
1227-1230
UT code for WoS article
000326120300001
EID of the result in the Scopus database
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