Design of High Speed and High FIR Digital Filters Based on Distributed Algorithm

In order to deal with high speed and real time signal,hardware design of FIR digital filter was discussed.By means of Distributed Algorithm(DA),based on theory of data accumulation algorithm,FPGA hardware design method of parallel DA,series DA,and series-parallel DA were studied.By use of speed,resource and series-parallel DA,16-step constant coefficients high speed FIR digital filter was designed,and the filter was simulated under the conditions of QuartusⅡ4.1.Simulation result showed that the design method has validity,real time effectiveness and feasibility.Compared with the directed FIR filter design method using multipliers,this method has higher speed and lower cost,and greater practical value in dealing with real time signal.