Patent ID: 6108374
Filing Date: 2000-08-22
Classification: H04L,H04W

Abstract:
A method for determining the signal to interference plus noise ratio, comprising the steps of:establishing a set of path metrics corresponding to a set of signal to interference plus noise ratios;receiving a digital signal;determining a path metric for said digital signal;establishing a set of signal to interference plus noise ratio values corresponding to a set of short term average of metric values, said short term average of metric values defined as M.sub.i /.-+., wherein M.sub.i is an average Euclidean decoder metric value and .-+. is the expectation value of a decoded path metric,determining the decoded path metric from said received digital signal using a decoder, said decoded path metric defined as m.sub.i,averaging m.sub.i to produce an average decoded path metric;storing in a memory unit said average decoded path metric, said average decoded path metric defined as .-+.;determining an estimated Euclidean distance metric; andmapping said path metric to said corresponding signal to interference plus noise ratio in said set of signal to interference plus noise ratios.