Patent ID: 7613258
Filing Date: 2009-11-03
Classification: G01S,H04B

Abstract:
1. A method for estimating a signal-to-noise ratio of a spread spectrum signal, the spread spectrum signal being digitized at a predetermined frequency, the method comprising: receiving the spread spectrum signal in a receiver, the spread spectrum signal having an in-phase component and a quadrature component; receiving a predetermined pseudorandom code from a code generator; determining an in-phase correlation result based on the in-phase component and a predetermined pseudorandom code over a time period; determining a quadrature correlation result based on the quadrature component and the predetermined pseudorandom code over the time period; determining a signal power value based on the in-phase correlation result and the quadrature correlation result; determining an average noise power value based on the in-phase component and the quadrature component, wherein the in-phase component being a digital signal having a plurality of data points within the time period, the quadrature component being a digital signal having a plurality of data points within the time period, the average noise power value being determined by determining in a SNR estimation module the signal-to-noise ratio based at least on the signal power value and the average noise power value.