Abstract: A improved method for optimally equalizing a multicarrier communications system in the presence of both intersymbol interference (ISI) and colored noise. The method provides a frequency-domain training algorithm to obtain a minimum mean square error (MMSE) equalizer that accounts for both intersymbol interference (ISI) and colored noise, maximizes the signal to noise ratio (SNR) of systems using Discrete Multitone (DMT) modulation, and results in significant performance gains over prior equalization methods.

Abstract: An outer casing assembly for ceiling-fan motors includes an upper cover with a top surface and a downward-curving flange, having a central opening in the top surface and a plurality of bolt holes in the periphery of the downward-curving flange; a middle guard shell formed in a hollow body structure with an external circumference corresponding to the inner periphery of the downward-curving flange of the upper cover; and a lower cover with a bottom surface and an upward-curving flange corresponding to the structure of the upper cover, having a lower central opening in the bottom surface and a plurality of bolt holes in the periphery of the upward-curving flange. The upper cover, the middle guard shell and the lower cover are all made of mesh material, wherein the middle guard shell is vertically positioned between the upper cover and the lower cover both of which are connected together by screw bolts through the bolt holes of both the upper and lower covers.