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Multi-channel cic interpolation filter system and its realization method

A technology of interpolation filter and implementation method, which is applied in the direction of impedance network, digital technology network, electrical components, etc., can solve the problem of hardware resource consumption, and achieve the effect of reducing hardware resource consumption, good market application prospects, and simplified architecture design

Active Publication Date: 2016-03-16
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a multi-channel CIC interpolation filter system and its implementation method for the above-mentioned problem that the hardware resource consumption of the multi-channel CIC filter is relatively large

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  • Multi-channel cic interpolation filter system and its realization method
  • Multi-channel cic interpolation filter system and its realization method
  • Multi-channel cic interpolation filter system and its realization method

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Embodiment Construction

[0021] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] The system function of the multi-stage integral comb filter is:

[0023] H ( z ) = ( 1 KR 1 - Z - KR 1 - Z - 1 ) L

[0024] Among them, R is the interpolation multiple, K is the delay of the comb part, generally K=1 or 2, L is the number of series, L≦6. In the present invention, K=1 is taken as an e...

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Abstract

The invention provides a multichannel CIC (Cascaded Integrator Comb) interpolation-filter system and an implementation method thereof. The method comprises the following steps of: inputting M paths of serial data into an L-grade comb filter for comb-filtering processing; carrying out R-multiple interpolation processing for the data after subjected to the L-grade comb-filtering processing; dividing the M paths of serial data after subjected to the interpolation processing into the serial data in P channels with N paths on each channel, and then inputting the serial data into an L-grade integrating filter of the P channels for integrating-filtering processing, wherein the hardware resource of the same integrating filter is multiplexed by the N paths of data on each channel. By adopting the multichannel CIC interpolation-filter system and the implementation method of the multichannel CIC interpolation-filter system disclosed by the invention, not only is the architecture design in the multichannel CIC filter simplified, but also the consumption of the hardware resource is further reduced.

Description

technical field [0001] The invention relates to the technical field of multi-rate signal processing in digital signal processing, in particular to a multi-channel CIC interpolation filter system and a method for realizing the multi-channel CIC interpolation filter system. Background technique [0002] In the software radio, the digital up-conversion algorithm needs to interpolate and filter the data. In the last level of data interpolation and filtering, CIC (Cascaded Integrator Comb, cascaded integral comb) interpolation filter is generally used. The use of CIC interpolation filters has the following advantages: ① only an adder is needed, without the multiplication required by a general FIR filter; ② no need to store the coefficients of the filter. The above-mentioned advantages are of great significance both for improving the practicability and simplifying the hardware design, so the CIC interpolation filter has a particularly important position in the multi-ratio signal p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H17/02
Inventor 胡应添
Owner COMBA TELECOM SYST CHINA LTD