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Parallel FIR filtering method and FIR filter

A technology of filters and filter coefficients, applied in electrical components, digital technology networks, impedance networks, etc., to solve problems such as difficulty in meeting the hardware area requirements of high-parallel FIR filters

Inactive Publication Date: 2017-06-09
SHANGHAI HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, the hardware area of ​​the FIR filter increases linearly with the improvement of the parallelism of the FIR filter. Therefore, while the processing speed is improved by designing hardware with a high parallelism, the corresponding hardware overhead will continue to increase, resulting in high The hardware area required by the parallelism FIR filter can realize its function, but due to the constraints of chip area and other conditions, it is difficult to meet the hardware area requirements of the high parallelism FIR filter

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  • Parallel FIR filtering method and FIR filter

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Embodiment Construction

[0056] Embodiments of the present invention provide a parallel FIR filtering method and an FIR filter, which are used to effectively reduce hardware overhead and improve calculation speed.

[0057] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps o...

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Abstract

The embodiment of the invention discloses a parallel FIR filtering method and a FIR filter, and aims to effectively reduce hardware cost and improve computing speed; the method comprises the following steps: pre-adding and merging input signals so as to obtain first to-be-processed signals, wherein the numbers of the input signals and first to-be-processed signals are bigger than 1; pre-multiplying the first to-be-processed signals with an objective filter coefficient so as to obtain second to-be-processed signals, wherein the objective filter coefficient is matched with the first to-be-processed signals; delaying and merging the second to-be-processed signals so as to obtain an output signal.

Description

technical field [0001] The embodiments of the present invention relate to the field of digital signal processing, in particular to a parallel FIR filtering method and an FIR filter. Background technique [0002] Finite Impulse Response filter (full name in English: Finite Impulse Response, English abbreviation: FIR) is the most basic component in a digital signal processing system. It has linear phase-frequency characteristics, and its unit sampling response is finite. A stable system can be realized. The traditional FIR filter can only meet the requirements of real-time data processing by configuring multiple sets of FIR filters to adapt to multi-channel antenna data for processing. However, as the scale of antennas continues to increase, the scheme of using multiple sets of FIR filters will This significantly increases the corresponding hardware overhead, and can no longer meet the low-consumption and high-speed filtering requirements. [0003] The parallel algorithm mea...

Claims

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Application Information

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IPC IPC(8): H03H17/00
CPCH03H17/00H03H2017/0081
Inventor 熊博官鹭刘云
Owner SHANGHAI HUAWEI TECH CO LTD
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