Realization of non finite extent quadratic digital filters

Presents efficient realization structures of nonfinite extent quadratic digital filters, which are described in a recursive form, using a matrix decomposition approach and exploiting the existing symmetries in the Volterra Kernels. In particular, using the LU decomposition the authors derive a modular structure with less computational and hardware requirements. It is expected, as in the linear case, that the nonfinite extent quadratic digital filters will be more efficient than their finite extent counterparts. The proposed realization structure may be considered as the basis for the implementation of the nonfinite extent quadratic digital filters by VLSO systolic and wavefront array processors