shall take a look at an example of two code sequences s k and s m both of which are four bits long the number of deviations value 1 is 3 this yields the unscaled correlation value 4 u2212 2 3 u2212 2 in the following another preferred embodiment of the method of the invention will be described this can be used when one wants to obtain information on the above mentioned partially overlapping symbols first we shall examine fig3 again the figure shows two short code sequences 200 202 the measured delay difference of which is one symbol correlation calculation is divided into two parts on the basis of the delay between the sequences since different information symbols partially overlap due to the delay correlations r 1 r 2 are calculated separately for these symbols the first part 300 comprises the sample pairs which precede the first symbol u2018 0 u2019 of the rotated sequence the figure shows only one sample pair the other part 302 comprises the sample pairs which follow the first symbol u2018 0 u2019 of the rotated sequence said symbol being included the division is based on the boundary of the information symbols of the rotated code sequence in the figure there are three such sample pairs the calculation of deviations described above is performed.