Doppler shift estimation in DS/SS receiver using correlation-peak waveform fitting

Tingyan Yao; Weigang Zhao; Qishan Zhang; Yanhong Kou

doi:10.1117/12.773628

10 November 2007 Doppler shift estimation in DS/SS receiver using correlation-peak waveform fitting

Tingyan Yao, Weigang Zhao, Qishan Zhang, Yanhong Kou

Proceedings Volume 6795, Second International Conference on Space Information Technology; 679517 (2007) https://doi.org/10.1117/12.773628
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

We consider the estimation of Doppler shift of the data-modulated signal in the direct sequence spread spectrum (DS/SS) communication system. A new open-loop Doppler shift estimation algorithm is developed by taking advantage of the priori knowledge that correlation peak is Sinc-function of Doppler shift in the DS/SS receiver. The proposed algorithm samples correlation peaks on different Doppler shifts and fits these samples to the correlation peak curve using a nonlinear least squares method. Performance of the proposed method is demonstrated by statistical analysis and numerical simulation. And a comparison with the four-quadrant frequency discriminator algorithm (FQFD) is given.

Citation Download Citation

Tingyan Yao, Weigang Zhao, Qishan Zhang, and Yanhong Kou "Doppler shift estimation in DS/SS receiver using correlation-peak waveform fitting", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679517 (10 November 2007); https://doi.org/10.1117/12.773628

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