A Design Method and Device for Approximately Accurate Reconstruction Cosine Modulated Filter Bank

A filter bank and cosine modulation technology, applied in the field of communication satellites, can solve problems such as algorithm convergence and numerical stability are not considered

Active Publication Date: 2020-06-05
中国人民解放军93209部队
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Problems solved by technology

[0005] Since the approximately exact reconstructed cosine modulation filter bank designed by the existing method does not consider the convergence and numerical stability of the algorithm, the present invention proposes a design method and device for an approximately exact reconstructed cosine modulated filter bank

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  • A Design Method and Device for Approximately Accurate Reconstruction Cosine Modulated Filter Bank
  • A Design Method and Device for Approximately Accurate Reconstruction Cosine Modulated Filter Bank
  • A Design Method and Device for Approximately Accurate Reconstruction Cosine Modulated Filter Bank

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[0086] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0087] figure 1 It shows a schematic flowchart of a method for designing an approximately accurate reconstructed cosine modulated filter bank provided in this embodiment, including:

[0088] S1. According to the definition of the cosine modulation filter bank and the relationship between the output and the input of the cosine modulation filter bank, the approximate exact reconstruction condition of the cosine modulation filter bank is calculated;

[0089] S2. According to the approximate exact reconstruction condition, establish a mathematical model for the design of an approximate exact reconstruction cosine modulation filter bank;

[0090] S3. Calculate and obtain a set of ...

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Abstract

The invention discloses a design method and device for an approximate precision reconstitution cosine modulation filter bank. According to the device, the approximate precision reconstitution conditions of the cosine modulation filter bank are calculated according to the definition of the cosine modulation filter bank and the output and input relation of the cosine modulation filter bank; a mathematical model of design of the approximate precision reconstitution cosine modulation filter bank is established according to the approximate precision reconstitution conditions; a set of prototype filter coefficients are calculated according to the mathematical model; the approximate precision reconstitution cosine modulation filter tank is calculated through the definition of the cosine modulation filter bank and the set of prototype filter coefficients. The stopband attenuation performance of the approximate precision reconstitution cosine modulation filter bank obtained through scale transformation is obviously improved, the convergence rate is high, the numerical stability is high, and quite important theoretical guiding significance and engineering practical value are achieved for design of satellite-borne signals in a future satellite communication system.

Description

technical field [0001] The invention relates to the technical field of communication satellites, in particular to a design method and device for an approximately accurate reconstruction cosine modulation filter bank. Background technique [0002] Cosine modulated filter banks are widely used in the field of satellite communications to flexibly implement signal multiplexing and demultiplexing functions and reduce the complexity of satellite signal forwarding. Therefore, the cosine modulated filter bank has important engineering application value, and the majority of researchers have generated great interest in its design method. [0003] According to different applications, cosine modulation filter banks can be divided into exactly reconstructed cosine modulated filter banks and approximately exact reconstructed cosine modulated filter banks. Among them, for the design of approximately exact reconstructed cosine modulated filter banks, the exact reconfigurability of the filt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/36G06F111/10
CPCG06F30/367
Inventor 阳志明郭兴波夏冬玉陈国杰刘涛吕学刚董丽娟李巍
Owner 中国人民解放军93209部队
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