Blind Estimation of PN Sequence in Non-periodic DSSS Signal
Xiaolin Zhang, Hongyuan Li · International Conference on Electric Information and Control Engineering · 2012
A long pseudo-noise (PN) sequence estimation and synchronization in non-periodic DSSS signal is proposed in this paper. With the help of sliding window and making use of the separability of received signal, the blind estimating is achieved based on Projection Approximation Subspace Tracking (PAST) algorithms within each sub-section. Finally, the long PN sequence can be estimated by sorting and splicing. Computational analysis shows that the sub-section subspace technique for PN sequence estimation in non-periodic DSSS signal have good SNR tolerance, and largely reduce the computational complexity and storage conception.