DS-SS code acquisition based on simultaneous search and verification

A double-dwell acquisition system that can simultaneously operate search and verification processes, by employing two correlation blocks, is proposed. The search block continuously looks for threshold-crossing instants, and at those instants, the verification block is reset and reinitiated. The thre...

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Bibliographic Details
Published in:IEEE transactions on communications 2000-06, Vol.48 (6), p.921-924
Main Authors: Chang, Hyon Sock, Park, Yong Wan, Lee, Yong Hoon
Format: Article
Language:English
Subjects:
Acquisitions
Communications Society
Computer simulation
Correlation
Correlators
Fading
Impedance matching
Marketing
Matched filters
Searching
Signal to noise ratio
Spread spectrum communication
Testing
Thresholds
Vehicular and wireless technologies
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Summary:A double-dwell acquisition system that can simultaneously operate search and verification processes, by employing two correlation blocks, is proposed. The search block continuously looks for threshold-crossing instants, and at those instants, the verification block is reset and reinitiated. The threshold is time varying and updated depending on the partial correlation. Computer simulation results indicate that the proposed technique can perform better than existing double-dwell systems which alternate between search and verification modes.
ISSN:0090-6778
1558-0857
DOI:10.1109/26.848549