数字滤波器硬件实现的设计流程

R. Yousefi, A. Ahmadi, S. M. Fakhraie
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引用次数: 3

摘要

数字滤波器是电信、多媒体和雷达系统的基本组成部分。在本文中,我们演示了数字滤波器硬件实现的设计流程。在这种方法中,我们从过滤器的高级建模开始。然后在问题描述的基础上,提取出问题的黄金模型。为了提取黄金模型,我们分析了峰值估计、系数量化、字长优化和寄生振荡。在提取黄金模型后,研究了三种硬件实现方法。面积和频率约束是实现方法的重要问题。在实时应用中,频率是一个重要的问题,应该使用完全组合的方法。在低采样率的应用中,面积更重要,因此我们推荐使用位串行实现方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design flow for hardware implementation of digital filters
Digital filters are the basic component of telecommunication, multimedia and radar systems. In this paper, we demonstrate a design flow for hardware implementation of digital filters. In this methodology, we start with high level modeling of filters. Then based on the specification of the problem, we extract a golden model for it. To extract golden model, we analyze peak value estimation, coefficients quantization, word-length optimization and parasitic oscillations. After extracting the golden model, three approaches for hardware implementation are investigated. Area and frequency constraints are important issue for method of implementation. In real-time applications that frequency is an important issue, a fully combinational method should be used. In applications with low sample rates area is more important so we recommend using bit serial- implementation method.
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