Apparatus for calculating decision parameters in an IMT-2000 system
View Patent ↗Improved techniques for calculating decision parameters in an IMT-2000 system is disclosed. In an apparatus for calculating decision parameters, there is provided a correlation value calculation unit having a number of correlation value calculators, each of which calculates a correlation value between selected information that is selected at the mini-slot selection unit and one of capable input signals. In order to selectively operate the correlation value calculators, there is provided a correlation circuit control unit controlling the operation of each of the correlation value calculators by using each of the comparison between the received correlation value to a predetermined threshold value. Accordingly, the power consumption of the correlation value calculators is reduced. And, the decision parameter is selected from the decision parameters previously selected during the divided monitoring section, thereby enabling high-speed cell search.
1. An apparatus for calculating decision parameters in an IMT-2000 system, the IMT-2000 system having a mini-slot selection unit for selecting a mini-slot position said apparatus comprising:
a correlation value calculation unit having a number of correlation value calculators, each of which calculates a correlation value between selected information that is selected at a mini-slot selection unit and one of input signals; and
a correlation circuit control unit having a number of correlation circuit controllers each of which receives a correlation value from a corresponding one of the correlation value calculators and compares the received correlation value to a predetermined threshold value during a predetermined monitoring section,
wherein one of correlation values is equal to or greater than the threshold value is selected as a decision parameter, and
wherein only the correlation value calculator having a larger value than the threshold value in the monitoring section calculates the correlation value.
2. The apparatus as recited in claim 1 , wherein the predetermined monitoring section is obtained by dividing a total monitoring section of each of the correlation value calculators.
3. An apparatus as recited in claim 2 , wherein said threshold value is determined in order to determine whether one of the correlation value calculators operates or not during the total monitoring section.