最小硬件代价离散系数FIR滤波器的设计

Design of Discrete Coefficients FIR Filters with Minimum Hardware Cost

针对高速并行脉动处理的需要 ,利用图的概念 ,给出了寻找利用最少硬件代价和最佳波动结构实现常系数乘法的系数表示算法 ,并用此法求得的离散系数设计FIR滤波器 ,提出了一种从连续系数到离散系数的优化算法。仿真结果表明 ,这种表示方法比传统的CSD码优越 。

Parallel pulsating structures are usually used in high-speed application. In this paper, using the representation of graph, an algorithm is presented to find the minimum hardware cost and the optimum pulsating structure of constant coefficients multiplication. Then a method is also offered to optimize the coefficients of FIR filters in the discrete coefficients space. Experimental results show that the method is prior to conventional CSD representation and the optimization method of FIR filters is efficient and necessary.