Title :
Differentially coherent code acquisition in Doppler
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. 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;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.798420
