SIGNAL PROCESSOR WITH REDUCED COMPLEXITY, AND RECEIVER COMPRISING SUCH A SIGNAL PROCESSOR

摘要

A signal processor has an X-Y rotation circuit and a phase angle control circuit, in said phase angle control circuit an input phase being approximated by a series of consecutive in magnitude decreasing phase angles for forming an output vector by rotation of an input vector over the approximation of the input phase. According to the invention, in the phase angle control circuit an accuracy of the representation of a phase angle out of said series of phase angles is dependent on the magnitude of said phase angle, thereby reducing the number of computations in the phase angle control circuit.