Fourth-order HOS deconvolution in wideband communication applications with lattice geometric motion

A number of fourth-order HOS approaches are reviewed for applicability to RF propagation in wideband application in urban environments. A lattice geometry is used to model constraints in the propagation which constrain the mean direction of arrival. Errors in estimation of this angle, and methods of increasing the signal level can potentially be mitigated using blind deconvolution with a distributed set of sources. With a moving receiver, a time average can also potentially improve these estimates. Data results shown some of these modeled propagation effects, which have dramatic angular changes with slight frequency shifts