The field of digital signal processing has been receiving justified attention over the years because of a number of reasons including sophisticated algorithms, high computational speed and wider area of applications. In connection to this, design of finite impulse response (FIR) filter has drawn the attention of researchers throughout the globe. A number of promising developments has been carried out over the last few decades which emphasize on the design of hardware efficient filter structure. In this paper, a new technique of FIR filter design has been addressed by virtue of genetic algorithm. Filter coefficients have been searched over the discrete space in such a way that the architecture consists of shifts and only two adders. As a matter of fact, the proposed FIR filter involving shift and only two additions (ISOTA) results in minimal hardware cost during its implementation. This has been illustrated by means of a few example filters in this work. Some of the recently proposed FIR ISOTA filters have also been taken for the purpose of comparison. Finally, the proposed filter has been implemented on Altera Cyclone IV FPGA board.

多年来，由于多种原因，包括复杂的算法，高计算速度和广泛的应用领域，数字信号处理领域受到了合理的关注。与此相关，有限脉冲响应（FIR）滤波器的设计引起了全球研究人员的关注。在过去的几十年中，已经进行了许多有希望的发展，这些发展着重于硬件高效滤波器结构的设计。本文利用遗传算法研究了一种新的FIR滤波器设计技术。在离散空间上搜索滤波器系数的方式是，该体系结构由移位和仅两个加法器组成。事实上，所提出的FIR滤波器仅包含移位和两个加法（ISOTA），因此在实施过程中可将硬件成本降至最低。在本文中，通过一些示例过滤器对此进行了说明。为了比较，还采用了一些最近提出的FIR ISOTA滤光片。最后，建议的滤波器已在Altera Cyclone IV FPGA板上实现。