Beanispace preprocessing with an improved robustness against out-of-sector sources using second-order cone programming
Aboulnasr Hassanien, S.A. Elkader, Alex B. Gershman, Kon Max Wong · 2005
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).