Blind Estimation of Long Code DSSS Signal Based on Subspace Tracking

Abstract:

Aiming at solving the blind estimation problem of dispreading spectrum sequence under low SNR, a spread-spectrum estimation algorithm based subspace tracking is studied in this paper. This method avoids the direct eigen decomposition, using the sliding window technique to obtain the code synchronization, then use segmentation subspace tracking method estimate spreading sequence and splice in a certain order to achieve pseudo-code blind estimation. The results show that the algorithm can complete the accurate estimation of PN code sequence in low SNR conditions, reduce the amount of data storage and be easy hardware implementation

• Periodical: Applied Mechanics and Materials (Volumes 484-485)
• Pages: 976-981
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.484-485.976
• Online since: January 2014
• Authors: Chao Ma*, Li Min Zhang, Jian Xiong Wang
• Keywords: Blinding Estimation of Spread-Spectrum Waveform, DSSS, Long Code, Subspace Tracking

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