Patent ID: 7065375

Claim:
A process for estimating a speed of movement of a mobile terminal operating in a wireless communication system and communicating with a base station via a transmission channel, the process comprising: estimating fading of the transmission channel; performing an autocorrelation on the fading for providing a first autocorrelation result, the autocorrelation being performed over a duration corresponding to a minimum speed of movement of the mobile terminal that is to be estimated, the autocorrelation being a normalized autocorrelation of at least one fading coefficient, with the first autocorrelation result being a vector having a chosen length; calculating a plurality of reference autocorrelation results for a plurality of predetermined values of speed of movement of the mobile terminal, the calculating being based upon a predetermined autocorrelation function performed on the fading, wherein the plurality of reference autocorrelation results are also vectors having the same length resulting from a normalized autocorrelation of the at least one fading coefficient using the known autocorrelation function; comparing the first autocorrelation result to the plurality of reference autocorrelation results; and estimating the speed of movement of the mobile terminal based upon the comparing.