Patent ID: 7724805

Claim:
A method of obtaining a power measurement of a digital quadrature signal input to a mobile transmitter comprising: receiving a digital quadrature signal comprising a real component and an imaginary component, at least one of the real component and the imaginary component comprising a plurality of multi-code channels spread using orthogonal spreading codes; sampling the digital quadrature signal over a period corresponding to mutually orthogonal segments of the orthogonal spreading codes; determining a desired power measurement value based on the samples of the digital quadrature signal by determining a Root Mean Square (RMS) value of the digital quadrature signal based on the samples of the digital quadrature signal; comparing the RMS value to a desired RMS value to determine an RMS error; and compensating for the RMS error; detecting a gain of the mobile transmitter; and controlling an output power of the mobile transmitter based on the gain of the mobile transmitter; wherein compensating for the RMS error of the digital quadrature signal enables accurate control of the output power of the mobile transmitter based on the gain of the mobile transmitter.