Low-Complexity Variable Step-Size Adaptive Equalizers for Digital Communications

In this paper, we propose new low-complexity variable step-size version of the family of affine projection algorithms for adaptive channel equalization. Computational complexity of presented algorithms are reduced through selective partial update of the filter coefficient vector. Simulation results demonstrate the usefulness of the proposed algorithms in attenuating noise and intersymbol interference (ISI) with low-complexity and fast convergence rate

Keywords:

Adaptive Filter , channel equalizer , intersymbol interference , low-complexity , variable step-size