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Sampling reconfiguration method for bandpass signal modulation broadband converter

A band-pass signal and modulated broadband technology, which is applied in the reconstruction field of frequency-domain sparse signal modulated broadband converter sampling, can solve the problems of large dimension and high reconstruction complexity

Active Publication Date: 2012-11-28
36TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since in the m×L matrix A, m
If the bandpass signal is regarded as a frequency range [0, f end ] low-pass signal to process, then the dimensions of the perception matrix A and the unknown vector z(f) will be larger during reconstruction, and the reconstruction complexity will be higher

Method used

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  • Sampling reconfiguration method for bandpass signal modulation broadband converter
  • Sampling reconfiguration method for bandpass signal modulation broadband converter
  • Sampling reconfiguration method for bandpass signal modulation broadband converter

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Embodiment Construction

[0035] The method for reconstructing the samples of the band-pass signal modulation broadband converter of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] figure 1 It is a flow chart of the reconstruction method of band-pass signal modulation broadband converter sampling of the present invention, as shown in the figure, the reconstruction method of the present invention comprises the following steps:

[0037] (1) Construct a perception matrix

[0038] As introduced in the Background Art, the coefficient Construct the perception matrix A from this * , so that the perception matrix A * The elements in are

[0039] a il * = c i , L 2 ...

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Abstract

The invention discloses a sampling reconfiguration method for a bandpass signal modulation broadband converter. The sampling reconfiguration method comprises the following steps of: constructing a perceptive matrix and a frequency domain unknown vector, obtaining a value of the frequency domain unknown vector and obtaining an original bandpass signal according to a mapping relation.

Description

technical field [0001] The invention relates to the field of signal sampling, in particular to a reconstruction method for frequency domain sparse signal modulation broadband converter sampling. Background technique [0002] The Shannon / Nyquist sampling theory states that the signal should be sampled at least twice the channel bandwidth. In recent years, with the development of compressed sensing (also known as "compressed sampling") technology, it has been found that when the signal is sparse or compressible, the signal can be sampled at a rate lower than the Nyquist sampling rate, thus The proposed method of sampling an analog signal at a sampling rate lower than the Nyquist rate is called the sub-Nyquist sampling method. [0003] Mishali et al. in the paper "From theory to practice: Sub-Nyquist sampling of sparse wideband analog signals" (see for details, IEEE Journal of Selected Topics in Signal Processing, vol.4, no.2, pp.375-391, April 2010 ) The modulated wideband c...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04L27/00H03M7/30
Inventor 杨小牛郑仕链
Owner 36TH RES INST OF CETC
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