Patent ID: 9118399
Filing Date: 2015-08-25
Classification: H04B

Abstract:
1. A method comprising: using a correlation function to correlate a pseudo-random spreading code having a first offset with a spread signal to produce a first correlation result; using the correlation function to correlate the pseudo-random spreading code having a second offset with the spread signal to produce a second correlation result; applying a first weight to the first correlation result to generate a first weighted correlation result, wherein the first weight is the value of the correlation function at feedback loop obtained lock at the first offset; applying a second weight to the second correlation result to generate a second weighted correlation result, wherein the second weight is the value of the correlation function at feedback loop obtained lock at the second offset; determining a value of a cost function using the first weighted correlation result and the second weighted correlation result; and adjusting the first offset and the second offset in dependence upon the value of the cost function.