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http://dx.doi.org/10.7840/KICS.2012.37A.2.119

A Super-Resolution Time Delay Estimation Algorithm for Spread Spectrum Signals  

Shin, Joon-Ho (한국항공대학교 정보통신공학과 이동통신연구실)
Myong, Seung-Il (한국전자통신연구원 광가입자기술연구팀)
Chang, Eun-Young (공주대학교 전기전자제어공학부)
Park, Hyung-Rae (한국항공대학교 정보통신공학과 이동통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.2A, 2012 , pp. 119-127 More about this Journal
Abstract
In this paper a super-resolution time delay estimation algorithm is developed for real-time locating systems (RTLSs) that employ a direct-sequence spread spectrum technique, along with its performance analysis in multipath environments. The classical correlation method provides relatively good performance in line-of-sight (LOS) environments but its performance seriously degrades in multipath environments, especially when signals are spaced closer than a PN chip. Therefore we shall develop a super-resolution time delay estimation algorithm that may estimate the time delays of multipath signals even in closely spaced multipath environments using the MUSIC algorithm for direction-of-arrival estimation and analyze its performance by applying the algorithm to the ISO/IEC 24730-2.1 RTLS system. 
Keywords
Super Resolution Algorithm; Real-Time Locating System; Spread Spectrum; MUSIC; Time Delay Estimation;
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1 A. M. Bruckstein, T. J. Shan, and T. Kailath, "The resolution of overlapping echoes," IEEE Trans. ASSP, vol. ASSP-33, no. 6, pp. 1357-1367, 1985.
2 T. J. Shan, M. Wax, and T. Kailath, "On spatial smoothing for direction-of-arrival estimation of coherent signals," IEEE Trans. ASSP, vol. 33, no. 8, pp. 806-811, 1985   DOI
3 R. T. Williams, S. Prasad, A. K. Mahalanabis, and L. H. Sibul, "An improved spatial smoothing technique for bearing estimation in a multipath environment," IEEE Trans. ASSP, vol. 36, no. 4, pp. 425-432, 1988.   DOI   ScienceOn
4 M. A. Pallas and G. Jourdain, "Active high resolution time delay estimation for large BT signals," IEEE Trans. Sig. Proc., vol. 39, no. 4, pp. 781-788, 1991.   DOI
5 F. X. Ge, D. Shen, Y. Peng, and V. O. K. Li, "Super-resolution time delay estimation in multipath environments," IEEE Trans. Circuits and Systems, vol. 54, no. 9, pp. 1977-1986, 2007.   DOI   ScienceOn
6 R. Roy and T. Kailath, "ESPRIT- Estimation of signal parameters via rotational invariance techniques," IEEE Trans. ASSP, vol. 37, no. 7, pp. 984-995, 1989.   DOI   ScienceOn
7 International Standard ISO/IEC 24730-2, Information Theory-Real Time Locating System(RTLS), ISO/IEC, 2006.
8 R. O. Schmidt, "Multiple emitter location and signal parameter estimation," IEEE Trans. Antennas Propagat., vol. AP-34, no. 3, pp. 276-280, 1986.
9 R. Kumaresan and D. W. Tufts, "Estimating the angles of arrival of multiple plane waves," IEEE Trans. AES, vol. AES-19, no. 1, pp. 134-139, 1983.
10 Z. Hou and Z. Wu, "A new method for high resolution estimation of time delay," Proc. ICASSP, pp. 420-423, 1988.