A FILTER STRUCTURE AND A OPERATING METHOD THERE OF FOR MULTI CHANNEL POLY PHASE INTERPOLATION PSF FIR

摘要

The present invention relates to a first switch for epeuahyi Al digital filter used in the base band of the mobile communication system, to select a phase sequence of digital signals from a plurality channels in the interpolation method; Filter unit for the second type of interpolation of the phase selection signal from the switch 1 for each phase by multiple sub-filter processing and the filter; A second switch to distinguish between the selected signal and outputs from multiple sub-filters the filter unit according to the channel; A first step of applying a respective signal to the first switch of the first switch and filter section and the configuration made contains additional clock for supplying a clock signal of the multiples to the second switch characterized in, and further, from multiple channels; A second step of, by a multiple switching of the first switch the signals applied to each channel in the process of interpolation, the phase input to the filter unit and; A third step of the method of interpolation by the phase signal input to the filter unit by the process epeuahyi al filtered by a multiple clock; Is characterized in consisting of a fourth process of polyphase interpolation filter by a multiple clock switching of the second switch, the processed signal channel separated output by the process and terminate.