DocumentCode
3108491
Title
Doppler compensation and code acquisition techniques for LEO satellite mobile radio communications
Author
Povey, Gordon J R ; Talvitie, Jaakko
Author_Institution
Edinburgh Univ., UK
fYear
1996
fDate
13-15 May 1996
Firstpage
16
Lastpage
19
Abstract
LEO satellite channels can experience extremely large Doppler shifts which makes the PN code acquisition of spread spectrum signals difficult. The use of an FFT technique to estimate the Doppler offset on a pilot carrier signal is shown to allow Doppler shift compensation to within 250 Hz. This eliminates the need to search the Doppler ambiguity during code acquisition and considerable improves the mean code acquisition time performance. We consider the performance of a code acquisition architecture developed for satellite spread spectrum receivers
Keywords
Doppler shift; 250 Hz; Doppler ambiguity; Doppler compensation; Doppler offset estimation; Doppler shift compensation; FFT technique; LEO satellite mobile radio communications; PN code acquisition; frequency resolution; mean code acquisition time performance; pilot carrier signal; satellite channel; satellite spread spectrum receivers; spread spectrum signals;
fLanguage
English
Publisher
iet
Conference_Titel
Satellite Systems for Mobile Communications and Navigation, 1996., Fifth International Conference on
Conference_Location
London
Print_ISBN
0-85296-658-X
Type
conf
DOI
10.1049/cp:19960398
Filename
576489
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