CAJ | 학술논문

为简化结构并提高算法效率,研究 FIR半带滤波器的等效结构.论述FIR半带滤波器的时域和频域特性,运用插值和抽取级联的等效性推导出 FIR半带滤波器的简化结构,并以一个10阶半带滤波器为例进行仿真研究.仿真结果表明:FIR 半带滤波器的简化结构能有效减少延时单元总数和单位时间内乘法运算的总次数,起到提高算法效率和降低硬件资源占用率的作用.
위간화결구병제고산법효솔,연구 FIR반대려파기적등효결구.논술FIR반대려파기적시역화빈역특성,운용삽치화추취급련적등효성추도출 FIR반대려파기적간화결구,병이일개10계반대려파기위례진행방진연구.방진결과표명:FIR 반대려파기적간화결구능유효감소연시단원총수화단위시간내승법운산적총차수,기도제고산법효솔화강저경건자원점용솔적작용.
@@@@The equivalent structure of FIR half-band filter is studied to simplify its structure and improve algorithm efficiency. The time-domain and frequency-domain features of FIR half-band filter are described. The simplified structure of this filter is deduced according to cascade equivalences of interpolation and decimation. A 10-order FIR half-band filter is taken for simulation example, and the results show that the simplified structure can effectively help to reduce the amount of delay-units, the frequency of multiplication in order to increase the efficiency of algorithm and to decrease the occupation of hardware.