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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Analysis of UMB Signal Acquisition Algorithms According to Frame Interval and Bin Spacing in indoor Wireless Channels

실내 무선 환경에서 프레임 및 탐색 단위 구간에 따른 UWB 신호 동기 획득 알고리즘의 성능 분석

  • 오종옥 (숭실대학교 정보통신전자공학부) ;
  • 양석철 (숭실대학교 정보통신전자공학부) ;
  • 신요안 (숭실대학교 정보통신전자공학부)
  • Published : 2004.12.01
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Abstract

In this paper, we analyze the performance of linear search and bit reversal search algorithms based on the single-dwell serial search for rapid UWB (Ultra Wide Band) signal acquisition in typical indoor wireless channel environments. Simulation results according to bin spacing and frame interval in IEEE 802.15 Task Group 3a UWB indoor wireless channels show that bit reversal search algorithm achieves much smaller normalized mean acquisition time than linear search algorithm. In particular, it is found that the normalized mean acquisition time of the bit reversal search according to the range of searching termination interval closely matches the ideal case. In addition, we observe that the acquisition performance of bit reversal search algorithm becomes much better as bin spacing gets finer.

본 논문에서는 전형적인 실내 무선 채널 환경에서 초광대역 (Ultra Wide Band; UWB) 신호의 고속 동기 획득을 위한 Single-Dwell 연속 통기 탐색 기반의 Linear 탐색 알고리즘 및 Bit Reversal 탐색 알고리즘에 대한 성능분석을 수행하였다. IEEE 802.15 Task Group 3a UWB 실내 무선 채널 환경에서 프레임 구간 및 탐색 단위 구간 등의 변화에 따른 모의실험 결과. Linear 탐색 알고리즘보다 Bit Reversal 탐색 알고리즘이 정규화된 평균 동기 획득 소요 시간에 대해 단연 우수함을 확인하였으며, 탐색 종료 구간의 범위 변화에 따른 정규화된 평균 동기 획득 소요 시간이 이상적인 경우와 거의 일치함을 확인하였다. 특히, Bit Reversal 탐색 알고리즘의 경우 탐색 단위 구간이 세밀할수록 동일한 소요 시간에 대해 더욱 정확한 동기 획득 성능을 얻음을 확인할 수 있었다.

Keywords

References

  1. Federal Communications Commission, Revision of Part 15 of the Commission's Rules Regarding Ultra-Wideband Transmission, ETDocket 98-153, April 2002
  2. 신요안, 양석철, 오종옥, 'IEEE 802.15 WPAN기술 표준화 동향,' Telecommun. Review (무선통신.방송의 표준 기술 특집호), 제87호, pp.131-148, 2003년 11월
  3. http://www.ieee802.org/15/pub/TG3a.html
  4. http://www.ieee802.org/15/pub/TG4a.html
  5. 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 https://doi.org/10.1109/26.843135
  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 https://doi.org/10.1109/4234.660796
  7. K. Siwiak and D. McKeown, Ultra-Wideband Radio Technology, John Wiley & Sons, 2004
  8. Y. Ma, F. Chin, B. Kannan, and S. Pasupathy, 'Acquisition performance of an ultra wide-band communications system over a multiple-access fading channel,' Proc. IEEE Conf. Ultra Wideband Syst. & Technol. (UWBST 2002), pp.99-103, Baltimore, USA, May 2002
  9. 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. (UWBST2002,), pp. 105-109, Baltimore, USA, May 2002
  10. D. J. Gargin, 'A fast and reliable acquisition scheme for detecting ultra wide-band impulse radio signals in the presence of multi-path and multiple access interference,' Proc. IEEE Conf. Ultra Wideband Syst. & Technol. (UWBST2004), pp. 106-110, Kyoto, Japan, May 2004
  11. IEEE 802.15 TG3a Channel Modeling Sub-Committee, 'Proposed UWB channel model,' available at http://www.ieee802.org15/pub/TG3.html
  12. 양석철, 신요안, 'UWB 시간 도약 다원 접속 시스템,' 한국통신학회지 (UWB 특집), 제20권, 제2호, pp. 86-98, 2003년 2월
  13. S. Kim, K.-H. Park, S. Yang, H.-S. Kim, and Y. Shin, 'Time hopping sequences based on pseudo random codes for ultra wideband impulse radio systems,' Proc. Int'l Tech. Conf. Circuits/Syst., Computers & Commun. (ITC-CSCC 2002), vol. 2, pp. 1354-1357, Phuket, Thailand, July 2002
  14. J. R. Foerster, 'The effects of multipath interference on the performance of UWB systems in an indoor wireless channel,' Proc. IEEE Vehicular Technol. Conf. (VTC 2001 -Spring), vol. 2, pp. 1176-1180, Rhodes, Greece, May 2001 https://doi.org/10.1109/VETECS.2001.944566
  15. A. Saleh and R. Valenzuela, 'A stadstical model for indoor multipath propagation,' IEEE Jour. Selected Areas m Commun., vol. 5, no. 2, pp. 128-137, February 1987 https://doi.org/10.1109/JSAC.1987.1146527