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Bootstrap-based method for testing credibility of BPSK signal blind process result

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

Active Publication Date: 2015-08-26
南京宏景智能电网科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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  • Bootstrap-based method for testing credibility of BPSK signal blind process result
  • Bootstrap-based method for testing credibility of BPSK signal blind process result
  • Bootstrap-based method for testing credibility of BPSK signal blind process result

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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] y 0 ( n ) = e - j 2 π f ^ 0 nΔt ...

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Abstract

The invention is specific to a radar and a common BPSK signal in cognitive radio, and provides a Bootstrap-based method for testing credibility of a BPSK signal blind process result, comprising the steps as follows: firstly recognizing a modulation mode, performing parameter estimation and signal reconstruction according to a mode corresponding to a recognizing result so as to respectively obtain a reference signal and a reconstruction signal; then performing Bootstrap sample extraction to an observation signal to obtain B Bootstrap sample sets of the observation signal; respectively performing N point and N / 2 point relevance addition to the reference signal and the B Bootstrap sample sets of the observation signal and taking a module to obtain B sample values so as to extract two random sample set mean value ratio characteristic; obtaining judgment threshold under a given significance level, and judging the credibility of the blind process result via comparing statistical magnitude and size of threshold. Without any prior information of signal and noise, the method of the invention has better effect for testing the credibility of the BPSK signal blind process result. When signal-noise ratio is more than 0dB, the error probability of using this algorithm to test the credibility of the BPSK signal blind process result is adjacent to zero.

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 Applications(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