Patent ID: 7450630
Filing Date: 2008-11-11
Classification: H04B

Abstract:
1. A device for processing a data signal that is transmitted over time variant paths of an air interface in a mobile radio receiver, the device comprising: a rake receiver portion having a number of fingers; a path search and evaluation device for finding paths of the air interface which must be allocated to said fingers and for estimating at least a path energy with respect to each detected path, said path search and evaluation device connected to said rake receiver portion; a rake finger selection and power consumption reduction device for selecting at least one of said fingers and to carry out a reduction of power consumption in a selected finger of said fingers, said rake finger selection and power consumption reduction device connected to said rake receiver portion and said path search and evaluation device; and said rake finger selection and power consumption reduction device selecting a finger of said fingers if an estimated path energy of a path that is allocated to said finger is less than a threshold value that is a function of a mean value of estimated path energies and a variance of the estimated path energies of said fingers, said threshold value being based on the difference between the mean value of the estimated path energies and the square root of the variance of the estimated path energies of said fingers.