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Method for realizing communication measurement instrument resampling based on Newton backward interpolation filter

A Newtonian backward interpolation, measuring instrument technology, applied in impedance network, digital technology network, digital transmission system, etc., can solve the problem of large amount of calculation, achieve the effect of wide conversion rate, wide application range, and reduce algorithm complexity

Inactive Publication Date: 2016-05-04
TRANSCOM INSTR
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Problems solved by technology

This structure is similar to the FIR filter, but the number of adders and multipliers is the square of its order, and the calculation amount is relatively large when the conversion rate is high

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  • Method for realizing communication measurement instrument resampling based on Newton backward interpolation filter
  • Method for realizing communication measurement instrument resampling based on Newton backward interpolation filter
  • Method for realizing communication measurement instrument resampling based on Newton backward interpolation filter

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Embodiment Construction

[0038] In order to be able to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0039] In order to achieve the above purpose, the method for re-sampling communication measuring instruments based on Newton's backward interpolation filter includes the following steps:

[0040] (1) Receive the sampling data of the communication measuring instrument;

[0041] (2) Re-sample the sampled data according to the interpolation extraction algorithm of the Newton backward interpolation filter.

[0042] In a preferred embodiment, when the communication measuring instrument is a vector signal generator, the step (1) includes the following steps:

[0043] (1-1-A) Generate orthogonal IQ data according to baseband symbol data;

[0044] (1-1-B) sampling the IQ data at a sampling rate fs0 that is an integer multiple of the symbol rate;

[0045] (1-1-C) Perform shaping filtering on the IQ data.

[0046] In a...

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Abstract

The present invention relates to a method for realizing a communication measurement instrument resampling based on a Newton backward interpolation filter. The method comprises a step of receiving the sampling data of a communication measurement instrument, a step of carrying out resampling on the sampling data according to the interpolation extraction algorithm of the Newton backward interpolation filter and further providing the baseband IQ signal resampling method of a vector signal generator and the baseband IQ signal resampling algorithm of a vector signal analyzer. By using the method, the baseband signal resampling of any ratio can be realized, the method has the advantages of a simple structure, high efficiency, and a wide conversion rate and is especially suitable for an occasion with a symbol rate wide range and continuous variation such as a signal source and an analyzer, and the computing speed is quick when the conversion rate is large. A K-order Newton backward interpolation filter comprises (3K-1) adders and (2K-1) multipliers, and compared with the K2 adders and K2 multipliers of a K-order FARROW filter, the complexity of the algorithm is reduced, the Newton backward interpolation filter has a wider range of application.

Description

Technical field [0001] The invention relates to the technical field of instrumentation, in particular to the technical field of communication measuring instruments, and specifically refers to a method for realizing re-sampling of communication measuring instruments based on a Newtonian backward interpolation filter. Background technique [0002] The vector signal generator is mainly used in the field of communication test and measurement. It can generate arbitrary waveform signals, IQ quadrature modulation signals and third and fourth generation mobile communication standard signals to meet the rapidly developing wireless communication test requirements. The vector signal analyzer is an instrument used to analyze the spectrum, phase and measurement error of the received communication signal after corresponding demodulation. [0003] In a digital communication system, the symbol rate must be an integer multiple of the sampling rate to ensure that the optimal sampling point is taken ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H03H17/04
CPCH04L43/022H03H17/0444H04L43/50
Inventor 刘明李杨
Owner TRANSCOM INSTR
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