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.