A fully LMS adaptive interpolated Volterra structure

The major drawback for using adaptive Volterra filters is the high computational complexity requirement. In this context, a large number of reduced complexity implementations have been proposed to increase the applicability of such filters. Contributing in this sense, this paper presents a fully LMS adaptive approach for implementing interpolated Volterra filters with a very good performance characteristic. The adaptive interpolated Volterra structure is a simplified version of the conventional one which adapts both the interpolator and the sparse filter. Numerical simulations illustrate the usefulness of the proposed approach.