108-tap 1:4 interpolation fir filter for digital mobile telecommunication

摘要: A 108-tap 1:4 interpolation FIR filter device for digital mobile telecommunication having a single bit input is provided. The employs look-up table minimum scheme and pipeline structure in which the size of entire tables significantly reduced by dividing four coefficient groups into three parts, respectively, effectively using symmetry within table. Thus, can simultaneously process operations channels means without increase an operating frequency. includes shift register selector processing channels, address generator producing addresses table, groups0˜3 outputs group via calculator as input, registers delaying are outputted parallel, converting delayed serial channel channel, matching time output channel. Therefore, has advantages that it reduce design area constituting also inputs from power consumption same frequency to general filter.