integrated circuit chip and a method are provided for estimating the power of a digitally modulated signal received by the receiver in a communication system the method comprises determining in phase and quadrature phase values of a phase constellation system relating to the received signal calculating at least one modified in phase value and at least one modified quadrature phase value relating to the phase constellation system rotated by a predetermined angle and determining absolute values of the in phase and quadrature phase values and the modified in phase and quadrature phase values the method further comprises identifying the maximum of the absolute values and determining a power estimate of the received signal based on the identified maximum value the provided technique may allow for estimating the power of a digitally modulated signal in a simple and less complex implementation application_number US 28464402 A description the illustrative embodiments of the present invention will be described with reference to the figure drawings wherein like elements and structures are indicated with like reference numbers referring now to the drawings in particular to fig2 a block diagram is depicted of the power estimation unit according to an embodiment an antenna receives a digitally modulated signal and the received signal is split into its i and q components by an i value determination unit 200 and a q value determination unit 210 respectively the i and q values represent the real part and the imaginary part respectively of the power of the received digitally modulated signal a calculation unit 220 determines an ix value by calculating the difference of the i value.