Signal processor for estimating signal parameters using an approximated inverse matrix
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorGregory E. Bottomley
Life of this patent
Estimating the term…
Abstract
A device that estimates information from a signal includes a receiver for receiving an input signal and electronic processing circuitry. The electronic processing circuitry generates a matrix associated with the input signal and determines 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. This approximation avoids possible mathematical difficulties that may be encountered in certain situations when a typical matrix inversion is calculated. The approximated inverse matrix is applied to the input signal to transform the input signal into an output signal. Information associated with the input signal is then determined based on the output signal.
Claims27
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.
A method for estimating information from a signal, comprising:
- receiving in a receiver an input signal from one or more sensors, and
- electronic processing circuitry coupled to the receiver and performing the following steps:
- generating a matrix associated with the input signal;
- determining 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;
- applying the approximated inverse matrix to the input signal to transform the input signal into an output signal;
- and
- determining and providing information associated with the input signal based on the output signal,
- wherein the electronic processing circuitry digitally filters the input signal using weights derived from the approximated inverse matrix.
Dependencies are inferred from the claim text.