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Study on Acquisition Method for GAS-CP-CDMA (Cyclic-Prefix Code Division Multiple Access using Good-Autocorrelation-Sequence)  

Lee, Seong-Min (국방과학연구소)
Kim, Young-Je (충남대학교 전자공학과)
Kim, Whan-Woo (충남대학교 전기정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.11A, 2008 , pp. 1087-1094 More about this Journal
Abstract
In this paper, we propose the acquisition method of the Cyclic-Prefix CDMA using Good-Autocorrelation-Sequence (GAS-CP-CDMA) system. The sequences for GAS-CP-CDMA are m-sequence and constant amplitude zero autocorrelation code (CAZAC) with good autocorrelation property. The GAS-CP-CDMA system is proposed for interference cancellation in multi-user and -path environment in co-cell. However, the reliable initial acquisition in multi-path fading channel and multi-user system environment is crucial. In this paper, non-coherent power detector and threshold value are used for discriminating signal acquisition. The sequence used for computer simulation is CAZAC. The simulation results show proper threshold value depends on the number of users. Through the computer simulation, we draw setting up method of the optimum threshold value for the GAS-CP-CDMA system.
Keywords
Acquisition; Constant Amplitude Zero Autocorrelation Code; GAS-CP-CDMA;
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