Patent ID: 8199738
Filing Date: 2012-06-12
Classification: H04B

Abstract:
1. An apparatus for processing a ranging channel signal from a signal received by a base station in a communication system, the apparatus comprising; a ranging code generator for generating a plurality of ranging codes according to ranging modes; a ranging channel signal extractor for extracting at least one first ranging channel signal from the received signal; a first selector for partially correlating each of a plurality of second ranging channel signals with the ranging codes to select at least one second ranging channel signal, the at least one second ranging channel signal having a first correlation value that is greater than a first threshold value, the plurality of second ranging channel signals being signals corresponding to a plurality of time delays of the at least one first ranging signal; a second selector for correlating the at least one second ranging channel signal selected by the first selector with a corresponding ranging code to select a second ranging channel signal having a maximum correlation value; and an estimator for estimating receiving power using a time delay of the at least one second ranging channel signal selected by the second selector, wherein the first selector performs partial correlation of a shorter length than each of the ranging codes.