Title :
Differentially coherent code acquisition in jamming and data modulation
Author :
Iinatti, Jari ; Pouttu, Ari
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
fDate :
6/21/1905 12:00:00 AM
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 tone jamming and with data modulation are presented. The performance of the 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 the use of post detection integration also in case of jamming and data modulation, in addition to quite severe Doppler shifts
Keywords :
Doppler shift; filtering theory; jamming; matched filters; modulation; signal detection; spread spectrum communication; synchronisation; DS-SS; Doppler shifts; data modulation; differentially coherent code acquisition; differentially coherent matched filter; direct-sequence spread-spectrum system; mean acquisition time; noncoherent matched filter acquisition; performance; performance measure; post detection integration; simulation results; tone jamming; Doppler shift; Electronic mail; Envelope detectors; Frequency synchronization; Jamming; Laboratories; Matched filters; Modulation coding; Signal to noise ratio; Wireless communication;
Conference_Titel :
Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-5538-5
DOI :
10.1109/MILCOM.1999.822749
