Patent ID: 7251497
Filing Date: 2007-07-31
Classification: H04B,H04W

Abstract:
1. A method for calculating signal-to-interference ratio (SIR) of a mobile device in a wireless communication system, the method comprisng: processing a communication signal transmitted by the mobile device to obtain a total power estimate of combined signal plus noise, the step of processing including calculating a slot energy signal using a number of signal values of the communication signal and a number of pilot symbols; estimating interference power of the communication signal, the step of estimating including examining squared differences between values relating to adjacent pilot symbols; scaling the estimated interference power and/or the total power estimate; subtracting the estimated interference power or the scaled estimated interference power from the total power estimate or the scaled total power estimate to thereby estimate signal power; and calculating the SIR by dividing the estimated signal power by the estimated interference power.