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Semi-parallelism wave filter and implementing method thereof

A filter and filter module technology, applied in impedance networks, digital technology networks, electrical components, etc., can solve problems such as large resources, large resource occupation, and complex controller implementation, and achieve the effect of reducing the number of uses

Active Publication Date: 2008-05-07
INESA ELECTRON
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Each ∑C in formula (2) k x(n-k) is a filter unit; at present, the data shift of the filter unit is mostly in the form of serial registers, which consumes a lot of resources; if the on-chip memory is used for circular shifting, each filter unit requires additional A controller; the controller not only needs to control the data shift operation, but also coordinates the data shift conflicts between the front and rear cascaded filter units. The controller is more complicated to implement and consumes more resources.

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  • Semi-parallelism wave filter and implementing method thereof

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Embodiment Construction

[0037] The semi-parallel filter of the present invention and its implementation method will be further described in detail below.

[0038] The semi-parallel filter of the present invention is realized based on the XC2V6000 chip of Xilinx Company, which has a series of programmable modules, and these programmable modules are programmed and configured to form the controller module in the present invention, the filter module and the accumulation device module.

[0039] The structure of the semi-parallel filter device and the connection mode of each module are shown in Figure 1. The device consists of three parts: a controller module 100, a filter module 200 and an accumulator module 300; wherein, the filter module 200 further includes m filter units. The cascade data generated after the controller module 100 receives the data input signal, the cascade memory address, and the cascade memory enable signal are input to the first-stage filter unit; the cascade accumulation data outp...

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Abstract

The present invention provides a semi-parallel filter and the implementation method. The semi-parallel filter consists of a controller module, a filter module and an accumulator module. The filter module consists of m filter units in cascade connection, that is to say, taps are divided into m parts, and each part has a tap and a tap shares an accumulator, thereby reducing the uses of resource. The data shift of the filter unit is realized by using the cyclic shift of an on-chip memory, thereby reducing the cost. In addition, the controlling mode also solves the problem of the difficult control of the on-chip memory.

Description

technical field [0001] The invention relates to a digital filter and its realization method, in particular to a semi-parallel filter and its realization method. Background technique [0002] Digital filter technology is a general technology, widely used in communication, consumer electronics and other digital fields. The mathematical principle of the digital filter is the following equation: [0003] y ( n ) = Σ k = 0 N - 1 C k x ( n - k ) · · · · · · · · · · · · · · · · · · ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02
Inventor 刘才勇
Owner INESA ELECTRON