APPARATUS AND METHOD FOR DETECTING POWER RATIO BETWEEN TRAFFIC CHANNEL AND PILOT CHANNEL IN MOBILE COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide an apparatus and a method for detecting power ratio between a traffic channel and a pilot channel in a mobile communication system. SOLUTION: An apparatus, for detecting a power ratio between a first channel and a second channel in a mobile communication system, includes a channel estimating device which generates a first signal by performing channel estimation using the first channel signal; a channel compensating which generates a second signal by channel-compensating the second channel signal using the first signal; and a power ratio detector which generates the absolute values of symbols constituting the second signal, selects absolute values in a predetermined length, after sorting the absolute values in magnitude order, calculates the average value of the selected absolute values, calculates the square of the absolute value of the first signal, and generates the power ratio using a ratio of the average to the square of the absolute value of the first signal. COPYRIGHT: (C)2004,JPO