Zero-forcing and MMSE filters design on the 2-sphere

We design a zero-forcing filter and a minimum mean square error (MMSE) filter on the 2-sphere by a spherical harmonic multiplication operator. Compared with the traditional optimal filters, our filters, determined by the signal and noise statistics, have such advantages: 1) can be asymmetric, and 2) simple calculation of our filters is involved.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Liying Wei, Rodney A. Kennedy
• Keywords: ICASSP 2011, Minimum Mean Square Error, Signal Processing, Spherical Harmonic Multiplication, Traditional Optimal filters