Two different fractionally spaced extensions of the SubGradient based Blind equalization Algorithm (SGBA) are provided. The first one is the direct extension of the linearly constrained SGBA for the symbol spaced setting. The second extension is the weighted and the 2-norm constrained fractionally spaced SGBA (FS-SGBA) algorithm. It is proven that the latter algorithm is globally convergent to ...

A wide variety of microphone arrays have been developed, and the authors have also proposed a type of equally-spaced small-scale microphone array. In this approach, a paired-microphone is selected at each frequency to design a subtractive beamformer that can estimate a noise spectrum. This paper introduces a nonequally-spaced microphone arrangement, which might give more spatial information tha...