TY - JOUR
T1 - Twin-cell detection (TCD)
T2 - A code acquisition scheme in the presence of fractional doppler frequency offset
AU - Yoon, Seokho
AU - Kim, Suk Chan
AU - Heo, Jun
AU - Song, Iickho
AU - Kim, Sun Yong
N1 - Funding Information:
Manuscript received May 18, 2006; revised June 11, 2007 and January 4, 2008. First published May 14, 2008; current version published April 22, 2009. This work was supported by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program supervised by the Institute for Information Technology Advancement (IITA) under IITA-2008-C1090-0803-0002. The review of this paper was coordinated by Prof. R. M. Buehrer.
PY - 2009
Y1 - 2009
N2 - As a novel code-acquisition scheme, the twin-cell detection (TCD) is proposed for the acquisition in time of spread-spectrum codes in the presence of fractional Doppler frequency offset (FDFO). When the FDFO exists, the correlation peak that is used for detection during the acquisition process is split into two neighboring peaks with smaller magnitudes, which results in a considerable degradation in the overall acquisition performance of conventional schemes. In the TCD, the decision variable for detection is formed by combining two consecutive correlator outputs so that the influence of the reduction in the correlation peak due to the FDFO can be alleviated. The numerical results show that the TCD can offer a better mean-time-to-synchronization performance than the conventional scheme based on the cell-by-cell detection.
AB - As a novel code-acquisition scheme, the twin-cell detection (TCD) is proposed for the acquisition in time of spread-spectrum codes in the presence of fractional Doppler frequency offset (FDFO). When the FDFO exists, the correlation peak that is used for detection during the acquisition process is split into two neighboring peaks with smaller magnitudes, which results in a considerable degradation in the overall acquisition performance of conventional schemes. In the TCD, the decision variable for detection is formed by combining two consecutive correlator outputs so that the influence of the reduction in the correlation peak due to the FDFO can be alleviated. The numerical results show that the TCD can offer a better mean-time-to-synchronization performance than the conventional scheme based on the cell-by-cell detection.
KW - Code acquisition
KW - Fractional Doppler frequency offset (FDFO)
KW - Spread-spectrum
KW - Spread-spectrum (SS)
KW - Twin-cell detection (TCD)
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U2 - 10.1109/TVT.2008.925295
DO - 10.1109/TVT.2008.925295
M3 - Article
AN - SCOPUS:66149091196
VL - 58
SP - 1797
EP - 1803
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
SN - 0018-9545
IS - 4
ER -