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Signal reconstruction method, channel capacity improvement method and holographic signal reconstruction method

A signal reconstruction and signal technology, applied in the field of holographic signal reconstruction and signal reconstruction, can solve the problems of lack of universality, limited universal application of signal reconstruction, inability to achieve uniform sampling, etc., to improve the transmission rate and channel capacity. Effect

Active Publication Date: 2020-08-18
武汉欧浦迪光子科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this convenience also limits the universal application of signal reconstruction, especially for occasions where uniform sampling cannot be achieved
[0009] In short, due to the nature of the sinc function, the Shannon sampling theorem requires uniform sampling in the signal reconstruction process using Shannon sampling, and it is only applicable to the sampling of low-pass signals, which has certain limitations.
In actual work, uniform sampling is not universal, and not all signal reconstruction tasks can be uniformly sampled

Method used

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  • Signal reconstruction method, channel capacity improvement method and holographic signal reconstruction method
  • Signal reconstruction method, channel capacity improvement method and holographic signal reconstruction method
  • Signal reconstruction method, channel capacity improvement method and holographic signal reconstruction method

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Embodiment 1

[0094] see Figures 1 to 2 As shown, the embodiment of the present invention provides a signal reconstruction method, which is mainly based on the solution of linear equations to obtain the Fourier coefficients, which can be called the LESR (Linear Equations Signal Reconstruction) method, and the method includes the following steps:

[0095] S1. When the DC component of the first signal is not considered, determine the number of sampling points according to twice the ratio of the highest and lowest frequencies of the first signal, the ratio of the highest and lowest frequencies of the first signal and the Fourier of the first signal The number of frequencies included in the series is , is a positive integer;

[0096] S2. Construct a matrix according to the sampling values ​​of each sampling point , and form a matrix according to the values ​​of the trigonometric function of the Fourier series of the first signal at the corresponding time of each sampling point , a matr...

Embodiment 2

[0159] see Figures 3 to 4 As shown, the embodiment of the present invention provides a channel capacity improvement method based on the signal reconstruction method in Embodiment 1. This method may be called an ECU (Enhanced Channel Utilization) method, that is, an enhanced channel utilization method. The channel capacity improvement method includes:

[0160] Q1. Modulate the information to be transmitted on each preset frequency or a preset frequency band composed of multiple preset frequencies, and send the mixed signal mixed by each preset frequency or preset frequency band to the channel for transmission. The preset frequencies corresponding to the information to be transmitted are , ,and , is a positive integer, is the highest frequency value of the signal allowed by the channel, It is the lowest value of the frequency of the signal that the channel allows to pass through. For the specific modulation situation, please refer to the attached drawing of the manua...

Embodiment 3

[0197] see Figures 5 to 6 As shown, the embodiment of the present invention provides a holographic signal reconstruction method based on the signal reconstruction method in Embodiment 1, which may be called an HSR (Holographic Sampling Reconstruction) method, that is, a holographic sampling signal reconstruction method.

[0198] The reason why it is called the holographic signal reconstruction method is that the original original image can be reconstructed even through a small part of the hologram, and the HSR method can achieve a similar effect in the signal reconstruction process, that is, only a small part of the signal can be obtained. The entire signal can be reconstructed.

[0199] In the embodiment of the present invention, the holographic signal reconstruction method includes the following steps:

[0200] P1. Obtain at least one segment of the first signal;

[0201] P2. When the DC component of the first signal is not considered, the number of sampling points is det...

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Abstract

The invention specifically discloses a signal reconstruction method, a channel capacity improvement method and a holographic signal reconstruction method, and relates to the technical fields of information communication and signal processing. The signal reconstruction method includes the following steps: when the DC component of the first signal is not considered, according to the first The number of sampling points is determined by twice the ratio of the highest and lowest frequencies of a signal; the matrix is ​​formed according to the sampling values ​​of each sampling point, and the trigonometric function of the Fourier series of the first signal is at the corresponding time of each sampling point The values ​​form a matrix, and the Fourier coefficients of the trigonometric functions of the Fourier series of the first signal form a matrix; according to the linear equation matrix, each Fourier coefficient in the matrix is ​​solved; according to each Fourier coefficient in the matrix obtained by the solution The Rie coefficients are used to reconstruct the original signal. The invention is suitable for both uniform sampling and non-uniform sampling, solves the limitation of the existing Shannon sampling technology, and has important application value in signal processing, information communication and other fields.

Description

technical field [0001] The invention relates to the technical fields of information communication and signal processing, and in particular to a signal reconstruction method, a channel capacity improvement method and a holographic signal reconstruction method. Background technique [0002] In the traditional technology, in the field of signal processing and communication, uniform sampling is mostly used, and the sinc function is used for interpolation. The sampling points need to be evenly distributed throughout the entire signal cycle, resulting in the need to use the same long time as the signal cycle to process signal recovery, that is, Signal Sampling and Reconstruction under the Shannon-Nyquist System. [0003] In the field of signal processing, the current sampling methods all follow the Shannon-Nyquist sampling theorem (also known as Shannon sampling theorem), and usually do equidistant sampling. Even if there is non-uniform sampling, it is still based on the adaptati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/30
CPCH03M7/30
Inventor 单广军
Owner 武汉欧浦迪光子科技有限公司