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Dual-Cell Combining Detection Method for Reduction of Residual Frequency Offset Influence on Code Acquisition Systems  

Chong, Da-Hae (성균관대학교 정보통신공학부)
Lee, Young-Yoon (성균관대학교 정보통신공학부)
Yoon, Tae-Ung (성균관대학교 정보통신공학부)
Lee, Young-Po (성균관대학교 정보통신공학부)
Lee, Myung-Soo (성균관대학교 정보통신공학부)
Yoon, Seok-Ho (성균관대학교 정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.7C, 2009 , pp. 715-723 More about this Journal
Abstract
In this paper, we propose a new detection method called dual-cell combining (DCC) detection for the acquisition in time of spread spectrum codes in the presence of residual frequency offset (RFO). When the RFO exists, the correlation peak used for detection during the acquisition process is split into two neighboring peaks with smaller amplitudes, resulting in considerable degradation in the overall acquisition performance of conventional methods. In the DCC detection method, 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 RFO can be alleviated. Numerical results show that the DCC detection method can offer better mean-time-to-synchrouization performance than the conventional method based on the cell-by-cell detection.
Keywords
code acquisition; detection; frequency offset; correlator output; spread-spectrum;
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Times Cited By KSCI : 1  (Citation Analysis)
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