1. A device for estimating information from a signal, comprising: a receiver for receiving an input signal, and electronic processing circuitry coupled to the receiver and configured to: generate a matrix associated with the input signal; determine an approximation of an inverse of the matrix based on the adjoint of the matrix and a scaling factor associated with the determinant of the matrix; apply the approximated inverse matrix to the input signal to transform the input signal into an output signal; and determine information associated with the input signal based on the output signal, wherein the electronic processing circuitry is configured to digitally filter the input signal using weights derived from the approximated inverse matrix.