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An improved MMUSIC algorithm of direction of arrival estimation
Author(s) -
Li Bo
Publication year - 2013
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1372
Subject(s) - computer science , algorithm , direction of arrival , computational complexity theory , signal subspace , fast fourier transform , signal (programming language) , singular value decomposition , range (aeronautics) , reliability (semiconductor) , subspace topology , noise (video) , telecommunications , artificial intelligence , image (mathematics) , power (physics) , materials science , physics , composite material , quantum mechanics , antenna (radio) , programming language
SUMMARY An improved algorithm is presented for a signal's direction of arrival estimation to reduce the computational complexity of the existing modified multiple signal classification (MMUSIC) algorithm. In this paper, FFT algorithm is introduced to narrow the searching range of the direction angle. Afterwards, a compromise approach‐based SVD and orthogonal–triangular decomposition takes the place of traditional double SVDs. Then, during matrix calculation, the noise subspace is achieved for the signal's direction of arrival. Finally, the system simulation demonstrates the efficiency and reliability of this novel MMUSIC algorithm. Compared with the existing algorithm, MMUSIC effectively saves the computational complexity with the approximation estimation performance. Copyright © 2011 John Wiley & Sons, Ltd.