Journal of University of Chinese Academy of Sciences >
A DSSS signal acquisition algorithm in presence of phase shift
Received date: 2014-02-20
Revised date: 2014-04-24
Online published: 2015-01-15
The problem of DSSS signal acquisition in presence of phase shift is analyzed and discussed. Firstly, our work focuses on the impact of the code phase and Doppler frequency estimation due to the modulated data. Then, two acquisition methods are discussed, and they can be used to overcome the impact of the phase shift. Compared to the sectional correlative accumulation algorithm, the approach of the delay and conjugate multiplication provides more stable performance. Simulation results show that the algorithms proposed here are able to capture the DSSS signal when the conventional algorithms fail due to the modulated data.
Key words： acquisition; phase shift; spread spectrum
WANG Lei . A DSSS signal acquisition algorithm in presence of phase shift[J]. Journal of University of Chinese Academy of Sciences, 2015 , 32(1) : 110 -115 . DOI: 10.7523/j.issn.2095-6134.2015.01.018
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