Title :
Beamspace preprocessing with an improved robustness against out-of-sector sources using second-order cone programming
Author :
Hassanien, Aboulnasr ; Elkader, Sharif Abd ; Gershman, Alex B. ; Wong, Kon Max
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
Abstract :
A new approach to beamspace preprocessing with an improved robustness against out-of-sector interfering sources is developed. The beamspace matrix filter is designed based on proper tradeoffs between the in-sector (passband) source distortion and out-of-sector (stopband) source attenuation. Computationally efficient convex formulations for these beamspace matrix filter design problems are derived using second-order cone programming (SOCP).
Keywords :
array signal processing; convex programming; distortion; filtering theory; matrix algebra; signal sources; SOCP; attenuation; beamspace matrix filter; beamspace preprocessing; in-sector source distortion; out-of-sector interfering source; second-order cone programming; Array signal processing; Art; Attenuation; Covariance matrix; Eigenvalues and eigenfunctions; Filters; Passband; Robustness; Sensor arrays; Vectors;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2004
Print_ISBN :
0-7803-8545-4
DOI :
10.1109/SAM.2004.1502967
