Analog-digital mixing modulation recognition device and digital modulation recognition device based on parallel judgment

A technology of analog-digital mixing and modulation mode identification, applied in digital transmission systems, modulation carrier systems, electrical components, etc., can solve problems such as low accuracy rate and long identification time

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A technology of analog-digital mixing and modulation mode identification, applied in digital transmission systems, modulation carrier systems, electrical components, etc., can solve problems such as low accuracy rate and long identification time

CN101834819AInactive Publication Date: 2010-09-15HARBIN INST OF TECH

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specific Embodiment approach 1

[0087] Specific implementation mode 1: the following combination figure 1 with figure 2 To explain this embodiment, the analog-digital hybrid modulation method identification device based on parallel judgment in this embodiment includes a modulation signal receiving module, an instantaneous characteristic normalization processing module, a modulation method characteristic parameter extraction module, and a modulation method rough classification judgment module. It also includes an amplitude keying modulation method judgment output module, a phase shift keying modulation method judgment output module, and a frequency shift keying modulation method judgment output module,

[0088] Modulation signal receiving module: used to receive analog or digital modulation signals and output to the instantaneous feature normalization processing module;

[0089] Instantaneous feature normalization processing module: extract the instantaneous features of the received analog or digital modulation s...

specific Embodiment approach 2

[0210] Specific implementation manner 2: the following combination image 3 with Figure 4 To explain this embodiment, the digital modulation method identification device based on parallel judgment in this embodiment includes a digital modulation signal receiving module, an instantaneous characteristic normalization processing module, a modulation method characteristic parameter extraction module, and a modulation method rough classification judgment module. That is, it also includes an amplitude keying modulation method judgment output module, a phase shift keying modulation method judgment output module, and a frequency shift keying modulation method judgment output module,

[0211] Digital modulation signal receiving module: used to receive digital modulation signals and output to the instantaneous feature normalization processing module;

[0212] Instantaneous feature normalization processing module: extract the instantaneous features of the received digital modulation signal an...

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Abstract

The invention discloses an analog-digital mixing modulation recognition device and a digital modulation recognition device based on parallel judgment, belonging to the communication field. The invention aims to solve the problems of low precision rate and long recognition time for providing a judgment tree by A.K. N and E.E.A zzouz. The invention is characterized in that the parallelly judged analog-digital mixing modulation recognition device comprises the following steps: a modulation signal receiving module coarsely classifies the received modulation signals through an instantaneous characteristic normalization module and a modulation mode characteristic parameter extraction module, and then the received modulation signals are particularly classified through an amplitude shift keying modulation judgment ouput module, a phase shift keying modulation judgment output module and a frequency shift keying modulation judgment output module. Compared with the analog-digital mixing modulation recognition device, the digital modulation signals received by the digital modulation recognition device based on parallel judgment have different inner structures of the modules when coarse classification and particular classification are conducted.

Description

Technical field [0001] The invention relates to an analog-digital mixed modulation mode recognition device and a digital modulation mode recognition device based on parallel judgment, and belongs to the communication field. Background technique [0002] The classification of digital or analog modulation methods plays a very important role in some communication applications, such as signal confirmation, interference determination, monitoring, electronic countermeasures and military threat analysis, etc., all need to identify signal modulation methods. Therefore, How to correctly identify the modulation method of the signal has become one of the important research topics in the communication field. [0003] The decision theory method based on statistical pattern recognition usually derives the statistical test quantity that is the characteristic parameter based on the statistical characteristics of the signal and the principle of minimizing the cost function to form the decision thre...

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Application Information

Patent Timeline

15 Sep 2010

Publication

CN101834819A

IPC: H04L27/00

Inventors: 赵雅琴; 陈淞