Wiener solution for the broadband Griffiths-Jim beamformers

The problem of finding the Weiner filters for a wideband adaptive beamformer is treated. Explicit expressions are given for the filters and the error power spectrum in the frequency domain. The expressions are simple to program and make it possible to investigate superresolution for wideband signals and to determine sufficient lengths of finite impulse response filters in adaptive arrays. The Griffiths-Jim (1982) structure implies that the ordinary LMS algorithm can be used without constraints.<>