METHOD AND DEVICE FOR DOWN SAMPLING

A method and device for down sampling are provided by the present invention, which relate to the field of communication technology, and are invented to enable the energy of the down sampling point obtained in down sampling to be as large as possible. The method for down sampling includes the following steps: the energy statistic values of the sampling point sets in current period are extracted; the sampling position corresponding to the sampling point set with the largest energy statistic value is selected as the down sampling position; and down sampling is performed according to the down sampling position. The device for down sampling includes: an extracting unit for extracting the energy statistic values of the sampling point sets in current period; a selecting unit for selecting the sampling position corresponding to the sampling point set with the largest energy statistic value as the down sampling position; and a down sampling unit for performing down sampling according to the down sampling position. The