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首页> 外文会议>VLSI signal processing, VIII >IMPLEMENTATION AND PERFORMANCE OF COMPOSITE FAST FIR FILTERING ALGORITHMS
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IMPLEMENTATION AND PERFORMANCE OF COMPOSITE FAST FIR FILTERING ALGORITHMS

机译：复合快速FIR过滤算法的实现和性能

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摘要

This paper provides a technique to derive a new set of fast Finite Impulse Response (FIR) filtering algorithms founded on the combination of filtering algorithms based on short FFT and short length fast FIR filtering algorithms. Such composite algorithms have the potential to reduce the arithmetic complexity and the characteristic to maintain a low processing delay, independent of the filter length. A methodology for an efficient implementation on the Digital Signal Processor (DSP) of these algorithms is proposed by an optimised structuration and organization of data in memory in order to keep as much as possible the improvement brought by the reduction of the arithmetic complexity without exceeding the DSP resources such as number of pointers registers and memory. The performance is evaluated in number of machine cycles per point computed. The solution consists to complete the generator code built for the basic algorithms by adding macro-instructions written in a "DSP" assembly code.
机译：本文提供了一种基于短FFT和短长度快速FIR滤波算法相结合建立新的快速有限冲激响应（FIR）滤波算法集的技术。这样的复合算法具有降低算术复杂度和保持低处理延迟的特性的潜力，而与滤波器长度无关。通过优化内存中数据的结构和组织，提出了一种在这些信号的数字信号处理器（DSP）上高效实现的方法，以便在不超出算法复杂度的前提下，尽可能多地保持降低算术复杂性所带来的改进。 DSP资源，例如指针寄存器和存储器的数量。通过计算出的每个点的机器周期数来评估性能。该解决方案包括通过添加以“ DSP”汇编代码编写的宏指令来完成为基本算法构建的生成器代码。

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