Title :
Differentially coherent code acquisition in wideband jamming
Author :
Iinatti, Jari ; Pouttu, Ari
Author_Institution :
Telecommun. Lab., Oulu Univ.
Abstract :
This paper considers the use of differentially coherent (DC) matched filter (MF) code acquisition in a direct-sequence (DS) spread-spectrum system. Simulation results in wideband jamming are presented. The performance of structure is compared to conventional noncoherent (NC) MF acquisition. The performance measure is the mean acquisition time, TMA. The results indicate that the differentially coherent method is a robust method by allowing also wideband jamming in quite severe Doppler shifts in addition to previously investigated narrowband interference and data modulation conditions
Keywords :
Doppler shift; digital simulation; filtering theory; jamming; matched filters; modulation; signal detection; spread spectrum communication; synchronisation; DS-SS system; Doppler shifts; Simulation results; code synchronization; data modulation; differentially coherent code acquisition; direct-sequence spread-spectrum system; matched filter code acquisition; mean acquisition time; narrowband interference; noncoherent matched filter acquisition; performance; performance measure; post detection integration; wideband jamming; Autocorrelation; Doppler shift; Envelope detectors; Frequency synchronization; Jamming; Laboratories; Matched filters; Narrowband; Robustness; Wideband;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.904103
