DocumentCode :
3312158
Title :
Twin-cell detection for spread spectrum code in the presence of fractional Doppler frequency offset
Author :
Jung, Kyunghwa ; Yoon, Seokho ; Yong Kim, Sun ; Song, Lickho
Author_Institution :
Kon-Kuk Univ., Seoul, South Korea
fYear :
2006
fDate :
7-11 Jan. 2006
Firstpage :
293
Lastpage :
294
Abstract :
In this paper, a novel detection method called the twin-cell detection is addressed for spread spectrum code acquisition in the presence of fractional Doppler frequency offset (FDFO). When the FDFO exists, the correlation peak used for detection during the acquisition process is split into two smaller neighboring peaks, resulting in severe degradation in the detection performance (and, consequently, in the overall acquisition performance). In the twin-cell detection, a decision variable for detection is formed by combining two consecutive correlator outputs, so that the reduction in the correlation value due to the FDFO can be alleviated. The simulation results show that the proposed scheme can offer better acquisition performance over the conventional scheme based on the cell-by-cell detection.
Keywords :
Doppler shift; mobile radio; pseudonoise codes; spread spectrum communication; PN code acquisition; cell-by-cell detection; consecutive correlator outputs; fractional Doppler frequency offset; spread spectrum code; twin-cell detection; AWGN; Additive white noise; Correlators; Degradation; Delay effects; Delay estimation; Frequency synchronization; Multiaccess communication; Spread spectrum communication; Sun;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Electronics, 2006. ICCE '06. 2006 Digest of Technical Papers. International Conference on
Print_ISBN :
0-7803-9459-3
Type :
conf
DOI :
10.1109/ICCE.2006.1598426
Filename :
1598426
Link To Document :
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