APPARATUS AND METHOD FOR MEASURING CARRIER-TO-INTERFERENCE-AND-NOISE RATIO USING DOWNLINK PREAMBLE

摘要

Provided are an apparatus and method for measuring a carrier-to-interference-and-noise ratio (CINR) using a downlink preamble in a digital communication system. More particularly, provided are an apparatus and method that measure CINRs using preambles of received signals respectively corresponding to a plurality of cells or sectors and perform handover and reverse power control using the CINRs in a digital communication system employing an orthogonal frequency division multiplexing (OFDM) technique or orthogonal frequency division multiple access (OFDMA) technique. According to the apparatus and method, it is possible to easily measure CINRs and perform handover and reverse power control using the measured CINRs. Therefore, deterioration in performance can be reduced even in a poor channel environment by maintaining a CINR received by a base station at an appropriate level.