利用格型复数波数字滤波器实现离散希尔伯特变换器,具有特性稳定、精确,需用硬件少的优点。本文考察了这种变换器的有限字长效应,通过将统计学的正交设计法与传统的直接搜索法相结合,提出了一种新的离散空间的系数优化方案。文中给出了具有简单系数的离散希尔伯特变换器的设计表格。 Discrete Hilbert transformers are realized by using the lattice complex digital filter, which has the characteristics of stable, accurate and less hardware. This paper investigates the limited word length effect of this converter. By combining the statistical orthogonal design method with the traditional direct search method, a new scheme of coefficient optimization in discrete space is proposed. In this paper, a design form of discrete Hilbert transformer with simple coefficients is given.