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Method and device for generating code offset analog signal

A technology of analog signal and generation method, which is applied in the field of digital communication coding, and can solve problems such as not being able to meet the chip rate

Inactive Publication Date: 2018-07-24
北京哨兵科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The present invention provides a method and device for generating a code-offset analog signal that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems. speed problem

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  • Method and device for generating code offset analog signal
  • Method and device for generating code offset analog signal

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Embodiment Construction

[0047] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] Such as figure 1 As shown in the figure, a code offset analog signal generation method is shown, including:

[0049] The source signal is sampled by the Nyquist sampling theorem to obtain a sample signal, and obtain the analog pulse signal of the sample signal;

[0050] Performing digital interpolation filtering processing on the analog pulse signal to obtain an analog interpolation signal, and performing resampling processing on the analog interpolation signal to obtain a code offset analog signal.

[0051] The idea in this embodiment is to use the interpolation method to realize signal interpolation. First analyze the realization principle of the digital interpolation filter from th...

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Abstract

The invention provides a method and a device for generating a code offset analog signal; the method comprises the following steps: an information source signal is sampled through the Nyquist samplingtheorem to obtain a sample signal and acquire an analog pulse signal of the sample signal; the analog pulse signal is subjected to digital interpolation filtering processing to obtain an analog interpolation signal, and resampling processing is performed on the analog interpolation signal to obtain a code deviation analog signal. Code offset is realized by using the interpolation method; interpolation is performed on an asynchronous sample, so that a sample value at the optimal sampling time can be recovered, and then a code offset analog signal can be obtained; and the problem that in the prior art, signal generation cannot meet the actual requirement for chip rate due to the doppler effect is solved.

Description

technical field [0001] The present invention relates to the technical field of digital communication coding, and more specifically, to a method and device for generating a code offset analog signal. Background technique [0002] In a coherent communication system, the effectiveness of data transmission firstly depends on the effectiveness of parameter estimation. For a coherent receiver, the first thing to do is data synchronization (mainly symbol synchronization, frequency synchronization, phase synchronization, frame synchronization, etc.). For a wireless communication system where there is relative motion between the sender and receiver, the Doppler effect is one of the important reasons that affect the synchronization of the system. When there is a large radial motion speed or a high center frequency, serious frequency differences will occur (the sign bit depends on the direction of relative motion), which will affect the communication synchronization quality. Due to t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00
CPCH04L7/0029
Inventor 方金辉宋哲
Owner 北京哨兵科技有限公司
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