The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지

Performance Analysis of Interleaved Super Orthogonal Convolutional Coded UWB-IR System for Wireless Fading Environment

무선 페이딩 환경에 적합한 인터리브된 초직교 길쌈 부호화 UWB-IR 시스템의 성능 분석

  • Kim Chang-Joong (Dept. of Radio Communication Science and Engineering, Hongik University) ;
  • Lee Ho-Kyoung (Dept. of Radio Communication Science and Engineering, Hongik University)
  • 김창중 (홍익대학교 전파통신공학과) ;
  • 이호경 (홍익대학교 전파통신공학과)
  • Published : 2005.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose interleaved super-orthogonal convolutional coded ultra wide-band impulse radio(ISOC-UWB-IR) system, and analyze its performance. The proposed system uses interleaver and deinterleaver to decorrelate the temporal correlation of the fading process and to obtain the diversity gain. We also suggest the three types of interleavers, which are pulse-wise interleaver(PI), pulse sub-group-wise interleaver(PSGI), and pulse group-wise interleaver(PGI). Performance analysis result shows that the interleaving scheme, rather than the code rate of super orthogonal convolutional code(SOC) encoder, affects the performance for the Rayleigh fading channel.

본 논문에서는 무선 페이딩 환경에 적합한 인터리브된 초직교 길쌈 부호화 초광대역 임펄스 라디오 (Interleaved Super-Orthogonal Convolutional Coded Ultra Wide-Band Impulse Radio: ISOC-UWB-IR) 시스템을 제안하고, 그 시스템의 성능을 변환함수 상한(transfer function bounding)을 이용하여 분석하였다. ISOC-UWB-IR 시스템에 사용되는 인터리빙 기법은 복잡도와 성능에 따라 펄스 단위, 펄스 부그룹 단위, 펄스 그룹 단위 중에서 선택될 수 있다. 성능 분석 결과 레이리 페이딩 환경에서 ISOC-UWB-IR 시스템의 성능은 초직교 길쌈 부호(Super-Orthogonal Convolutional Code: SOC)부호기의 부호율보다 인터리빙 방식의 종류에 더 많은 영향을 받는 것으로 나타났다.

Keywords

References

  1. R. A. Scholtz, 'Multiple access with time hopping impulse modulation', in Proc. Military Commun. Conf., pp. 447-450, Oct. 1993
  2. F. Rairez-Mireles, 'Performance of ultrawideband SSMA using time hopping and M-ary PPM', IEEE J. Select. Areas Commun., vol. 19, pp. 1186-1196, Jun. 2001 https://doi.org/10.1109/49.926374
  3. M. Z. Win, R. A. Scholtz, 'Impulse radio: how it works', IEEE Commun. Letters, vol. 2, pp. 36-38, Jan. 1998 https://doi.org/10.1109/4234.660796
  4. A. J. Viterbi, CDMA: Principles of Spread Spectrum Communications, Addison-Wesley, 1995
  5. A. R. Forouzan, M. Nasiri-Kenari, and H. A. Salehi, 'Low-rate convolutionally encoded time-hopping spread spectrum multiple access systems', in Proc. IEEE PIMRC 2000, vol. 2, pp. 1555-1558, Sep. 2000
  6. A. J. Viterbi, J. K. Omura, Principles of Digital Communication and Coding, McGraw-Hill, 1979
  7. M. K. Simon, M. Alouini, Digital Communication over Fading Channels: A Unified Approach to Performance Analysis, Wiley & Sons, 2000