TY - GEN U1 - Sonstiges A1 - Franz, Matthias O. T1 - Volterra and Wiener series T2 - Scholarpedia N2 - Volterra and Wiener series are two classes of polynomial representations of nonlinear systems. They are perhaps the best understood and most widely used nonlinear system representations in signal processing and system identification. A Volterra or Wiener representation can be thought of as a natural extension of the classical linear system representation. In addition to the convolution of the input signal with the system's impulse response, the system representation includes a series of nonlinear terms that contain products of increasing order of the input signal with itself. It can be shown that these polynomial extension terms allow for representing a large class of nonlinear systems which basically encompasses all systems with scalar outputs that are time-invariant and have noninfinite memory. KW - System identification KW - Kernel based learning Y1 - 2011 UR - http://www.scholarpedia.org/article/Volterra_and_Wiener_series U6 - https://doi.org/doi:10.4249/scholarpedia.11307 DO - https://doi.org/doi:10.4249/scholarpedia.11307 IS - 6(10):11307 ER -