Browse > Article

PN Code Acquisition Technique using A Pre-Dump Correlation Energy in DS-SS Systems  

Yeom, Soo-Nam (Sejong University)
Lee, Seong-Joo (Sejong University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.48, no.6, 2011 , pp. 22-27 More about this Journal
Abstract
This paper presents an efficient technique to reduce PN code acquisition time considerably by adjusting threshold values in direct sequence spread spectrum (DS-SS) systems. The proposed algorithm employs a pre-dump mode prior to a search mode, and the pre-dump mode determines threshold values of both search and verification modes depending on its correlation energy, which can improve not only the rejection performance of false code phases in the search mode but also that in the verification mode. The proposed method can reduce the mean code acquisition time by about 40% without increase of hardware costs compared with the conventional technique.
Keywords
Direct sequence spread spectrum (DS-SS); the pre-dump mode; mean code acquisition time; hardware costs;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 이성주, 김재석, "PN 코드 동기획득에서 다중 임계치의 효과," 전자공학회 논문지, 제39권 1호, TC편, 42-48쪽, 2002년 1월.
2 G. Giunta, A. Neri, M. Carli, "Constrained Optimization of Noncoherent Serial Acquisition of Spread-Spectrum Code by Exploiting the Generalized Q-Functions," IEEE Trans. on Veh, Techn. vol. 52, pp.1378-1385. Sept. 2003.   DOI   ScienceOn
3 이성주, 김재석, "탐색 창을 갖는 이중드웰 직렬 동기획득 방식에 대한 수학적 모델링 및 성능분석," 전자공학회논문지-S, 제36권 19호, 9-17쪽, 1999년 9월.
4 C.-J. Kim, H.-J. Lee, "Adaptive acquisition of PN sequences for DSSS communications, IEEE Trans. Commun, Vol.46, pp.993-996, Aug. 1998.   DOI   ScienceOn
5 Z. Chen, X. Chen, H. Hong, H. Lin, "Spread Spectrum Signal Synchronous Arithmetic Using Power Spectrum Estimation and Adaptive Threshold", WiCOM '08. 4th International Conference, pp.1-3, Oct. 2008.
6 G. Giunta, A. Neri, "Initial DS/SS code synchronization by two-dimensional techniques and MIMO systems", Proc. of 2004 VTC Spring, vol.2, pp.1119-1123, 2004.
7 M. Guainazzo, C. Sacchi, C. Regazzoni, "A serial acquisition scheme based on statistical-hypothesis-testing for asynchronous DS/CDMA systems", Proc. of ICC 2002 Conf., vol.5, pp.3111-3115, 2002.
8 Qualcomm Technical Manual, CDMA Mobile Station ASIC, 1994.
9 E. Sourour and S.C. Gupta, "Direct sequence spread spectrum parallel acquisition in a fading mobile channel," IEEE Trans. Commu., Vol. 38, No. 7, pp. 992-998, 1990.   DOI   ScienceOn