Wavelet packets-based MUSIC (WP-MUSIC) is proposed to improve the performance of classical MUSIC in scenarios of closely spaced DOA and low signal-to-noise ratio (SNR). With WP-MUSIC the fullband signal is decomposed into several subbands by wavelet packets, and then MUSIC is applied to each subband. The computational savings of WP-MUSIC compared to MUSIC are proven. Some simulation results, proving the validity and improved performance of the proposed approach, are presented.
['Yanbo Xue', 'Jinkuan Wang', 'Zhigang Liu']
Wavelet packets-based direction-of-arrival estimation