Title :
A DFE coefficient placement algorithm for sparse reverberant channels
Author :
Lopez, Michael J. ; Singer, Andrew C.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
fDate :
8/1/2001 12:00:00 AM
Abstract :
We develop an automated algorithm for determining the number and sparsely supported locations of coefficients in a multi-element array decision-feedback equalizer based on an estimated channel response. We aim for robustness to a wide variety of possible channel conditions, especially through taking advantage of the interplay between the MMSE-optimal feedforward and feedback filters
Keywords :
acoustic signal processing; circuit feedback; circuit optimisation; decision feedback equalisers; feedforward; least mean squares methods; reverberation; telecommunication channels; underwater sound; DFE coefficient placement algorithm; MMSE-optimal feedback filters; MMSE-optimal feedforward filters; automated algorithm; channel conditions; channel response estimation; multi-element array decision-feedback equalizer; sparse reverberant channels; sparsely supported coefficients location; underwater acoustic channel; Decision feedback equalizers; Delay; Digital communication; Diversity reception; Intersymbol interference; Nonlinear filters; Reduced order systems; Robustness; Underwater acoustics; Underwater communication;
Journal_Title :
Communications, IEEE Transactions on
