WAVELET PACKET TRANSFORM-BASED LEAST MEAN SQUARE BEAMFORMER WITH LOW COMPLEXITY
Author(s) -
Xiaofei Zhang,
Ziqing Wang,
Dazhuan Xu
Publication year - 2008
Publication title -
electromagnetic waves
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 89
eISSN - 1559-8985
pISSN - 1070-4698
DOI - 10.2528/pier08100104
Subject(s) - wavelet packet decomposition , computer science , wavelet , network packet , wavelet transform , algorithm , speech recognition , mathematics , artificial intelligence , computer network
A low complexity wavelet packet transform-based least mean square (LMS) adaptive beamformer is presented in this paper. This beamformer uses wavelet packet transform as the preprocessing, reduces the signal dimension in wavelet packet domain for low complexity and denoising, and employs least mean square algorithm to implement adaptive beamformer. Theoretical analysis and simulations demonstrate that this algorithm with better beamforming performance converges faster than the conventional adaptive beamformer and the wavelet transform-based beamformer. Finally, our proposed algorithm has the low complexity, and it can be easy to implement.
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