Patent ID: 6768729
Filing Date: 2004-07-27
Classification: H04B

Abstract:
A CDMA receiver comprising a Rake reception circuit operative to perform inâ€”phase synthesis of reception signals from a plurality of paths, wherein a delay profile indicating a signal power distribution with respect to delay times of the reception signals is measured, an interference wave power value is estimated on the basis of the measured delay profile, valid data are extracted from the delay profile on the basis of the estimated interference wave power value, a plurality of correlation peak positions are detected from the extracted valid data, and path allocation to said Rake reception circuit is determined on the basis of the correlation peak positions, wherein a change in a reception environment for reception signals is detected every time the reception signal is input, and valid data are extracted from the delay profile on the basis of the interference wave power value used in previous processing when it is detected that the reception environment remains unchanged.