Browse > Article

Enhanced Two-Step Search Scheme for Rapid and Reliable UWB Signal Acquisition  

Kim, Jae-Woon (숭실대학교 정보통신전자공학부)
Yang, Suck-Chel (숭실대학교 정보통신전자공학부)
Shin, Yo-An (숭실대학교 정보통신전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.12C, 2005 , pp. 1133-1143 More about this Journal
Abstract
In this paper, we propose an enhanced two-step search scheme for rapid and reliable signal acquisition in UWB systems under multipath channels. The proposed TSS-LS (Two-Step Search scheme with the Linear search based Second step) achieves rapid acquisition performance comparable to the conventional TSS-BS (Two-Step Search scheme with the Bit reversal search based Second step) already proposed by the authors, based on the single-dwell search with two-step thresholds and search windows. However, unlike the TSS-BS which employs the bit reversal search in the second step, the proposed TSS-LS utilizes the linear search in the second step to improve the reliability of signal acquisition. Simulation results with multipath channel models by IEEE 802.15.3a show that the two-step search schemes for the UWB signal acquisition can achieve sig nificant reduction of the required mean acquisition time as compared to general search schemes. In addition, we observe that the proposed TSS-LS achieves quite good bit error rate performance for large signal-to-noise ratios, which is favorably comparable to the case of ideal perfect timing.
Keywords
UWB; Signal acquisition; Linear search; Bit reversal search; Single-dwell; Double-dwell; Two-step search; TSS-BS; TSS-LS;
Citations & Related Records
연도 인용수 순위
  • Reference
1 http://www.ieee802.org/15/pub/TG3a.html
2 Federal Communications Commission, 'Revision of Part 15 of the Commission's rules regarding ultra-wideband transmission,' ET Docket 98-153, April 2002
3 IEEE 802.15 TG3a Channel Modeling Sub-Committee, 'Proposed UWB channel model,' available at http://www.ieee802.org/15/ pub/ TG3.html
4 A. Saleh and R. Valenzuela, 'A statistical model for indoor multipath propagation,' IEEE Jour. Selected Areas in Commun., vol. 5, no. 2, pp. 128-137, February 1987   DOI   ScienceOn
5 신요안, 양석철, 오종옥, 'IEEE 802.15 WPAN 기술 표준화 동향 Telecommun. Review (무선통신.방송의 표준 기술 특집호), 제87호, pp. 131-148, 2003년 11월
6 M. Z. Win and R. A. Scholtz, 'Impulse radio : How it works,' IEEE Commun. Lett., vol. 2, no. 2, pp. 36-38, February 1998   DOI   ScienceOn
7 K. Siwiak and D. McKeown, Ultra-Wideband Radio Technology, John Wiley & Sons, 2004
8 D. Cassioli, M. Z. Win, F. Vatalaro, and A. F. Molisch, 'Performance of low-complexity rake reception in a realistic UWB channel,' Proc. IEEE Int'l Conf. Commun. (ICC 2002), vol. 2, pp. 763-767, New York, USA, April 2002
9 http://www.ieee802.org/15/pub/TG4a.html
10 J. Oh, S. Yang, and Y. Shin, 'A rapid acquisition scheme for UWB signals in indoor wireless channels,' Proc. IEEE Wireless Commun. & Networking Conf. (WCNC 2004), Atlanta, USA, March 2004
11 L. Yang and G. B. Giannakis, 'Low- complexity training for rapid timing acquisition in ultra wideband communications,' Proc. IEEE Global Commun. Conf. (GLOBECOM 2003), vol. 2, pp. 769-773, San Francisco, USA, December 2003
12 J. K. Holmes and C. C. Chen, 'Acquisition time performance of PN spread-spectrum systems,' IEEE Trans. Commun., vol. 25, no. 8, pp. 778-784, August 2002
13 M. Z. Win and R. A. Scholtz, 'Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications,' IEEE Trans. Commun., vol. 48, no. 4, pp. 679-691, April 2000   DOI   ScienceOn
14 E. A. Homier and R. A. Scholtz, 'Rapid acquisition of ultra-wideband signals in the dense multipath channel,' Proc. IEEE Conf. Ultra Wideband Syst. & Technol. (UWBST 2002), pp. 105-109, Baltimore, USA, May 2002