一种压缩域下的跳频信号盲识别新方法

doi:10.3969/j.issn.1001-2400.2013.06.001

Abstract

Abstract:

A novel method to blindly identify frequency hopping signals is presented in the compressed domain. The samples obtained by compressive sampling effectively maintain the structure of and the information on the original signal, so the task of identification of the original signal could be done by directly processing the sampling values. The method is based on the difference in numerical characteristic between sampling values. According to the different characteristics of the expectation of sampling values under different hypotheses, identification is accomplished by using the deviation of the actual sampling values from the expectations under the corresponding hypothesis as the criterion. Without reconstructing the frequency hopping signal itself,hopping frequencies can be estimated through a small number of measurements by the compressive sampling algorithm. Simulation results have proved that the proposed method is adequate to the environments in which the signal-to-noise ratio is higher than -2dB. Meanwhile, compared with other traditional methods, the proposed algorithm greatly reduces the amount of data, the computational complexity, and the identification time.

Key words: compressive sampling, frequency hopping, identification, frequency estimation

CLC Number:

WU Jun;LIU Naian;SHEN Changlin;ZHANG Yanfei. Novel method for frequency hopping signals blind identification in the compressed domain[J].J4, 2013, 40(6): 1-5+139.

References

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Novel method for frequency hopping signals blind identification in the compressed domain

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