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BPSK Signal Blind Processing Result Credibility Testing Method Based on Bootstrap

A test method, a technology of reliability, applied in the field of signal processing

Active Publication Date: 2018-02-06
南京宏景智能电网科技有限公司
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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: adopt non-parametric Bootstrap method, obtain the Bootstrap sample set of certain capacity by resampling, carry out the credibility test of BPSK signal blind processing result, the test process does not need any prior information of signal and noise, And has a strong error detection ability

Method used

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  • BPSK Signal Blind Processing Result Credibility Testing Method Based on Bootstrap
  • BPSK Signal Blind Processing Result Credibility Testing Method Based on Bootstrap
  • BPSK Signal Blind Processing Result Credibility Testing Method Based on Bootstrap

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Embodiment

[0049] Reference attached figure 1 It shows the flow of the method for checking the credibility of BPSK signal blind processing results based on Bootstrap. The specific process includes the following steps:

[0050] (1) First identify the modulation mode of the observed signal; then estimate the amplitude of the signal according to the model corresponding to the identification result carrier frequency numbers code length and the symbol width and other parameters; and then obtain the reference signal y(n) and the reconstructed signal according to the estimated parameters

[0051] The reference signal can be expressed as:

[0052]

[0053] The reconstructed signal can be expressed as:

[0054]

[0055] (2) Bootstrap sample set acquisition: extract B Bootstrap sample sets of observed signals, the steps are as follows:

[0056] (2.1) Residual item extraction: If the observed signal is r(n), the residual item is the difference between the original signal and the...

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Abstract

Aiming at BPSK signals commonly used in radar and cognitive radio, the invention proposes a method for checking the credibility of BPSK signal blind processing results based on Bootstrap. The method first identifies the modulation mode, and performs parameter estimation and signal reconstruction according to the model corresponding to the identification result to obtain the reference signal and the reconstructed signal respectively; then extracts the Bootstrap samples from the observed signal to obtain B Bootstrap samples of the observed signal set; then the reference signal and the observation signal B bootstrap sample sets are respectively accumulated and moduloed by N points and N / 2 points to obtain B sample values, and then extract the mean ratio feature of two random sample sets; finally, in the given At a significant level, the judgment threshold is obtained, and then the credibility of the blind processing results is judged by comparing the statistics with the threshold. The present invention does not need any prior information of signal and noise, and the credibility test effect of BPSK signal blind processing is relatively ideal. When the signal-to-noise ratio is greater than 0dB, two types of credibility tests are performed on the BPSK signal processing results by using this algorithm The probability of error is close to 0.

Description

technical field [0001] The invention belongs to the technical field of signal processing, in particular to a method for checking the credibility of BPSK signal blind processing results based on Bootstrap. Background technique [0002] Under the condition of no prior information of the signal and low signal-to-noise ratio, the modulation mode identification and parameter estimation of the observed signal can only be processed blindly, and the process specifically includes modulation mode identification, parameter estimation and decoding. BPSK signal is a commonly used modulation pattern in radar and cognitive radio (CR), and it has many parameters. The reliability analysis of its blind processing results can provide information support for subsequent processing links, so this technology has become an electronic reconnaissance technology. A new issue facing the field. Literature [1] L.Pucker, "Review of Contemporary Spectrum Sensing Technologies (For.IEEE-SA P1900.6 Standards...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/38H04L1/00H04B17/00
Inventor 胡国兵吴珊珊胡晓燕王书旺高燕张园周波汤滟丁宁
Owner 南京宏景智能电网科技有限公司
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