APPARATUS AND METHOD FOR DETECTING USER IN COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and method for detecting a user in a communication system. SOLUTION: The method includes: in a communication signal, selecting (i) ranging sub-carrier signals among (k) sub-carrier signals upon which a k-point fast Fourier transform (FFT) has been performed; multiplying the (i) ranging sub-carrier signals by a ranging code; performing k-point inverse fast Fourier transform (IFFT) by inputting the (i) ranging sub-carrier signals multiplied by the ranging code and (k-i) 0s; detecting a power of each of the IFFT-processed (k) point signals; estimating a power of a desired received signal and a power of an interference signal by using powers of the (k) point signals according to a predetermined scheme; and detecting a user depending on the power of the desired received signal and the power of the interference signal. COPYRIGHT: (C)2007,JPO&INPIT