한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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An Efficient Code Acquisition Scheme for DSSS-based Real-Time Locating Systems

  • Lim, Jong-Tae (School of Electronic & Electrical Engineering, Hongik University) ;
  • Park, Hyung-Rae (School of Electronics, Telecommunication & Computer Engineering, Korea Aviation University)
  • 투고 : 2010.09.24
  • 심사 : 2010.12.24
  • 발행 : 2011.01.31
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초록

This paper proposes an efficient code acquisition scheme for direct-sequence spread spectrum (DSSS) based real-time locating systems (RTLS). The proposed scheme employs multiple bit integration to significantly decrease false alarms when no packet signal is transmitted and increase the detection probability when the RTLS tags are excited. The performance of the proposed code acquisition scheme is analyzed and numerically evaluated, and compared with those of single-dwell and traditional double-dwell code acquisition schemes. The simulation results show that the proposed multiple-bit integration scheme outperforms single-dwell and double-dwell schemes.

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참고문헌

  1. International standard ISO/IEC 24730-2, Information technology - Real-Time Locating Systems (RTLS), ISO/IEC, 2006.
  2. A. J. Viterbi, CDMA: Principles of Spread Spectrum Communication, Addision-Wisley, 1995.
  3. M. K. Simon, J. K. Omura, Scholtz, and B. K. Levitt, Spread Spectrum Communications Handbook, McGraw-Hill, 1994.
  4. O. S. Shin and K. B. Lee, "Differentially Coherent Combining for Double-dwell CodeAcquisition in DS-CDMA Systems," IEEE Trans. Comm., Vol.51, No.7, pp.1046-1050, Jul. 2003. https://doi.org/10.1109/TCOMM.2003.814205
  5. H. R. Park and B. J. Kang, "On the Performance of a Miximum Likehood Code Acquisition Technique for Preamble Search in a CDMA Reverse Link," IEEE Trans. on Veh. Tech. Vol.47, No.1, pp.65-74, Feb. 1998. https://doi.org/10.1109/25.661033