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Information Technology Journal
  Year: 2011 | Volume: 10 | Issue: 7 | Page No.: 1325-1333
DOI: 10.3923/itj.2011.1325.1333
 
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Anti-Detection Performance of Code-Hopping Direct Sequence Spread Spectrum System

Li Dezhi, Gu Xuemai and Guo Qing

Abstract:
In wireless communications especially satellite communications, as blind detection technologies developing, traditional Direct Sequence Spread Spectrum (DSSS) system is no longer secure enough. Code-Hopping (CH) DSSS system is considered as an evolution for its dynamization. CH-DSSS system gets rid of periodical cycle characteristic with its variable and unpredictable spreading sequence. Therefore, CH-DSSS signal is harder to be detected unauthorized. Theoretical analysis and simulations are carried out on both signal parameters and data demodulation. Results indicate that the anti-detection performance of CH-DSSS system improves logarithmically as the number of hopping codes increases. Considering the limited code sequence resource, the performance curve is given, from which a cost-effective codes number could be chosen.
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How to cite this article:

Li Dezhi, Gu Xuemai and Guo Qing, 2011. Anti-Detection Performance of Code-Hopping Direct Sequence Spread Spectrum System. Information Technology Journal, 10: 1325-1333.

DOI: 10.3923/itj.2011.1325.1333

URL: https://scialert.net/abstract/?doi=itj.2011.1325.1333

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