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余数系统由于其优良的并行计算特性,在乘加密集型的数字信号处理系统中得到了深入研究和关注.余数基的选择和构建是余数系统应用中的核心问题之一,它是VLSI实现复杂度的关键因素.目前的研究已经提出了多种具体的余数基形式,但构建方法种类繁多,且在构建过程中具有较大的随意性.传统的评估方法均为面向特定应用的电路实现进行评估,忽略了余数基形式带来的内在影响.本文从余数基的基本运算单元、动态范围利用率、通道间平衡性、余数基并行度这4个方面对余数基实现性能进行抽象,同具体的电路实现性能评估一起作为描述余数系统性能的参数,以避免通常的VLSI实现性能评估只能针对具体实现结构和电路的弊端,为余数基的构建提供建议.基于此,本文通过引入一个新的余数基分量,提出了一种多通道余数基构建方法,所构建的余数基具有良好的动态范围利用率、平衡性和并行度.
Due to its excellent parallel computing properties, the residue system has been deeply studied and focused on multiply-and-dense digital signal processing systems. The selection and construction of residue bases is one of the core issues in the application of residue systems. It is a complex VLSI implementation Degree of the key factors.At present, the study has proposed a variety of specific residue base form, but a wide range of construction methods, and in the construction process has a greater arbitrariness.Traditional evaluation methods are for application-specific circuit implementation Evaluate and neglect the inherent influence of residue base form.This paper abstracts the performance of residue base from the following four aspects: the basic operation unit of residual base, the dynamic range utilization, the balance between channels, the parallel degree of residue base, As the parameters to describe the performance of the residual system to avoid the performance evaluation of the general VLSI implementation, we can only provide suggestions for the construction of the residue base for the specific implementation of the structure and circuit.Based on this, by introducing a new The remainder of the base component, a multi-channel residue base construction method is proposed, the residue base constructed has a good dynamic Range utilization, balance and parallelism.