DocumentCode :
3598694
Title :
Differentially coherent code acquisition in Doppler
Author :
Iinatti, Jari ; Pouttu, Ari
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
Volume :
2
fYear :
1999
fDate :
6/21/1905 12:00:00 AM
Firstpage :
703
Abstract :
This paper considers the use of differentially coherent (DC) matched filter (MF) code acquisition in a direct-sequence (DS) spread spectrum system. Both a simplified analysis and simulation results are presented in an AWGN channel. The performance of the structure is compared to a conventional noncoherent (NC) MF acquisition. The performance measure is mainly the mean acquisition time, TMA, but also receiver operating characteristics (ROC) curves are given. The results indicate that the differentially coherent method is robust by allowing the use of post detection integration also in quite severe Doppler shifts
Keywords :
AWGN channels; Doppler shift; codes; matched filters; radio receivers; spread spectrum communication; synchronisation; AWGN channel; Doppler shifts; differentially coherent code acquisition; differentially coherent matched filter code acquisition; direct-sequence spread spectrum; mean acquisition time; performance; post detection integration; receiver operating characteristics curves; Analytical models; Autocorrelation; Delay; Doppler shift; Electronic mail; Laboratories; Matched filters; Multiple access interference; Spread spectrum communication; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
ISSN :
1090-3038
Print_ISBN :
0-7803-5435-4
Type :
conf
DOI :
10.1109/VETECF.1999.798420
Filename :
798420
Link To Document :
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