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An Efficient Code Acquisition Scheme for DSSS-based Real-Time Locating Systems
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 Title & Authors
An Efficient Code Acquisition Scheme for DSSS-based Real-Time Locating Systems
Lim, Jong-Tae; Park, Hyung-Rae;
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 Abstract
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.
 Keywords
Real-Time Locating Systems;Code Acquisition;Direct Sequence Spread Spectrum;RFID;
 Language
English
 Cited by
 References
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. crossref(new window)

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. crossref(new window)