Carrier Frequency Estimation based on Frequency Domain and Wavelet Ridge

doi:10.23940/ijpe.19.08.p10.21072115

Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (8): 2107-2115.doi: 10.23940/ijpe.19.08.p10.21072115

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Carrier Frequency Estimation based on Frequency Domain and Wavelet Ridge

Xiang Chen^a, Wei Zhi^b,*, and Yihan Xiao^b

a State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System (CEMEE), Luoyang, 471003, China
b College of Information and Communication Engineering, Harbin Engineering University, Harbin, 150001, China

Submitted on ;
Contact: * E-mail address: 879978106@hrbeu.edu.cn
Supported by:
The authors would like to thank the State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System Director Fund (CEMEE2019K0101A).

Abstract

Abstract: To estimate the carrier frequency of digital signals such as MASK, MPSK, and MQAM under the condition of white Gaussian noise, this paper uses the methods based on frequency domain and wavelet ridge, and two corresponding improved methods are proposed. For the method based on frequency domain, aiming at the problem of poor spectral accuracy and applicability, we propose a method using power spectrum instead of spectrum. Compared with the original method, the simulation consequences express that the improved method reduces the signal-to-noise ratio (SNR) threshold by 5dB. For the method based on wavelet ridge, we propose an improved method to identify the problems of initial iteration parameters, accuracy of results, and divergence points. The simulation consequences illustrate that the improved method reduces the signal-to-noise ratio threshold by 2dB compared with the original method.

Key words: carrier frequency estimation, digital signal, frequency domain, power spectrum, wavelet ridge

Xiang Chen, Wei Zhi, and Yihan Xiao. Carrier Frequency Estimation based on Frequency Domain and Wavelet Ridge [J]. Int J Performability Eng, 2019, 15(8): 2107-2115.

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Carrier Frequency Estimation based on Frequency Domain and Wavelet Ridge

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