DocumentCode :
2164957
Title :
A simple carrier frequency detection algorithm for fine compensation of Doppler shift in direct-sequence code division multiple access mobile satellite communications
Author :
Lim, Hyoungsoo ; Lee, Soo In ; Lee, Seong Pal
Author_Institution :
Satellite Commun. Syst. Dept., Electron. & Telecommun. Res. Inst., Taejon, South Korea
Volume :
1
fYear :
2000
fDate :
2000
Firstpage :
109
Abstract :
A simple algorithm is proposed for carrier frequency synchronization after PN code acquisition using FFT (fast Fourier transform) in a direct-sequence code division multiple access mobile satellite communications system. The proposed algorithm shows almost the same performance as the phase differential algorithm under additive white Gaussian noise channel environments. The proposed algorithm, however, largely reduces hardware complexity when a two-dimensional search algorithm is employed for PN code timing acquisition and coarse Doppler shift compensation since the proposed algorithm shares the FFT operator with the two-dimensional search
Keywords :
AWGN channels; Doppler shift; code division multiple access; fast Fourier transforms; frequency estimation; mobile satellite communication; multiuser channels; pseudonoise codes; search problems; signal detection; spread spectrum communication; synchronisation; 2D search algorithm; AWGN channel; DS-CDMA mobile satellite communications; Doppler shift compensation; FFT operator; PN code timing acquisition; additive white Gaussian noise channel; carrier frequency detection algorithm; coarse Doppler shift compensation; direct-sequence code division multiple access; fast Fourier transform; hardware complexity reduction; performance; phase differential carrier frequency estimation algorithm; two-dimensional search; two-dimensional search algorithm; Additive white noise; Correlators; Detection algorithms; Doppler shift; Fast Fourier transforms; Frequency estimation; Frequency synchronization; Multiaccess communication; Satellite communication; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
Type :
conf
DOI :
10.1109/ICC.2000.853074
Filename :
853074
Link To Document :
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