Patent ID: 7697597

Claim:
An apparatus for calculating decision parameters in an IMT-2000 system, the IMT-2000 system having a min-slot selection unit to select a min-slot position, wherein a decision parameter is selected, and a decision parameter selection unit to select one decision parameter from the calculated decision parameters, said apparatus comprising: a correlation value calculation unit having a first 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; and a ranking determination unit to receive each of correlation values provided from each of the correlation value calculators during a predetermined monitoring section, to rank the correlation values, and to selectively operate the correlation value calculators according to the rank of the correlation values, wherein only a predetermined number of correlation value calculators are selectively operated according to the rank of the correlation values, the predetermined number being less than the first number of correlation value calculators.