Differentially coherent code acquisition in wideband jamming

Author

Iinatti, Jari ; Pouttu, Ari

Author_Institution

Telecommun. Lab., Oulu Univ.

Volume

2

fYear

2000

fDate

2000

Firstpage

1129

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, T_MA. 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;

fLanguage

English

Publisher

ieee

Conference_Titel

MILCOM 2000. 21st Century Military Communications Conference Proceedings

Conference_Location

Los Angeles, CA

Print_ISBN

0-7803-6521-6

Type

conf

DOI

10.1109/MILCOM.2000.904103

Filename

904103