低信噪比下多相码信号检测与参数估计方法

doi:10.3969/j.issn.1001-2400.2015.01.028

Abstract

Abstract:

A detection and parameter estimation method based on expanded Wigner-Hough transform(WHT) is proposed to solve the detection and parameter estimation problem of the polyphase code signal in a low SNR. The polyphase code signal exhibits the characteristics of parallel multi-ridges in Wigner-Ville distribution(WVD). According to the characteristics, the expanded WHT uses the improved kernel function to cumulate the energy of polyphase code signal parallel multi-ridges in WVD. It can complete the signal detection and estimate the signal's modulation parameter. Theoretical analysis and simulation both indicate that the expanded WHT can accomplish the detection and parameter estimation of the polyphase coded signal in a low SNR, and is not affected by the coding type.

Key words: signal detection, parameter estimation, polyphase code signal, Wigner-Hough transform, low SNR

WANG Xiaofeng;ZHANG Guoyi;RUI Guosheng. Detection and parameter estimation of the polyphase code signal in a low SNR[J].J4, 2015, 42(1): 174-179.

References

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Detection and parameter estimation of the polyphase code signal in a low SNR

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