Method for reducing adjacent channel power ratio based on CIC filter and CIC filter

An adjacent channel power ratio and filter technology, applied in the field of multi-rate conversion, can solve the problems of high data overflow, CIC filter stopband attenuation and transition band is not very good, to reduce interference, low cost and high reliability Effect

Inactive Publication Date: 2017-06-13
ZTE INTELLIGENT IOT TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] FPGA implementation of CIC filter will cause the following problems: CIC filter will cause high data overflow problem due to integrator, the bit width of the original data needs to be extended; the stop band attenuation and transition ban...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing adjacent channel power ratio based on CIC filter and CIC filter
  • Method for reducing adjacent channel power ratio based on CIC filter and CIC filter
  • Method for reducing adjacent channel power ratio based on CIC filter and CIC filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] A method for reducing adjacent channel power ratio based on CIC filter, comprising the following steps:

[0029] 1) Input the data signal into the CIC filter, and the comb of the CIC filter outputs data;

[0030] 2) generate the integral pulse cic_inter_fs, and interpolate the data signal through the interpolation module;

[0031] 3) The combinatorial logic controls the switching between the output data of the comb and the interpolation of "0" values. If cic_inter_fs='0', the value of "0" is inserted, and the integrator inputs all 0 data; if cic_inter_fs='1', the integrator inputs the comb The output data of the state device;

[0032] 4) If the "0" value is inserted, the data bit width is calculated through the bit width control packet module, and the integrator outputs the data.

[0033] Wherein, in the step 2), the interpolation is to insert a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for reducing an adjacent channel power ratio based on a CIC filter and the CIC filter. The method comprises the steps of inputting a data signal into the CIC filter, wherein a comb filter of the CIC filter outputs data; generating an integral pulse cic_inter_fs and interpolating the data signal through an interpolation module; controlling the comb filter to output switching of data and ''0'' interpolation by combined logic, if the cic_inter_fs is equal to '0 ', interpolating ''0'' value, and inputting full 0 data by an integrator; if the cic_inter_fs is equal to '1 ', inputting the output data of the comb filter by the integrator; and if the ''0'' value is interpolated, calculating data bit width through a bit width control packet module, and outputting the data by the integrator. According to the method for reducing the adjacent channel power ratio based on the CIC filter and the CIC filter provided by the invention, a CIC algorithm is realized through logic, so the adjacent channel power ratio (ACPR) of a reader reaches a protocol standard, and the reading efficiency of an external filed application of the reader is not reduced.

Description

technical field [0001] The invention belongs to the field of multi-rate conversion of digital signal processing, and in particular relates to a method for reducing adjacent channel power ratio based on a CIC filter and a CIC filter. Background technique [0002] In the part of digital baseband processing, it is usually necessary to perform digital up-conversion or down-conversion processing on the signal. The CIC filter is a low-pass rate change filter, which is composed of an integrator (integrator) and a comb (Comb) filter stage. Depending on the position of the integrator and the comb, the functions of Decimation and Interpolation can be realized respectively. In the extraction type CIC, the integrator is in the front, followed by the comb, which realizes down-conversion processing. The insertion type CIC is the opposite, the comb is in the front, and the integrator is in the back, which realizes up-conversion processing. [0003] Before the digital baseband signal is s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03H17/02
CPCH03H17/0202H03H17/0201H03H17/0251H03H2017/0204H03H2017/021
Inventor 于茫陈冬
Owner ZTE INTELLIGENT IOT TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap