Patent ID: 7606294
Filing Date: 2009-10-20
Classification: H04B,H04L

Abstract:
1. A channel quality estimation method for estimating a channel quality of a signal transmitted by a Code Division Multiple Access method and for estimating the channel quality in a system having a synchronization channel not orthogonal to a channel which receives data, comprising: estimating a noise component of a desired channel to provide an estimated noise by a noise estimation unit; estimating a degree of a noise component caused by the synchronization channel with respect to said estimated noise to provide an estimated degree of the noise component; detecting the channel quality of a receiving channel based on said estimated degree of the noise component; and determining a final value of channel quality by comparing the detected channel quality to a set of threshold values, wherein the set of threshold values is selected from among a plurality of sets of threshold values that are associated with a same channel quality value and changed based on the estimated degree of the noise component.