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 M-ary Multiple Access UWB System Using Modified Hermite Polynomial Pulses

Modified Hermite Polynomial 펄스들을 사용하는 M진 다중접속 UWB 시스템의 성능 분석

  • 황준혁 (부산대학교 전자공학과) ;
  • 김석찬 (부산대학교 전자공학과) ;
  • 박동찬 (부산대학교 전자공학과) ;
  • 김병철 (부산대학교 바이오시스템공학부)
  • Published : 2008.09.30
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Abstract

In this paper, we propose and analyze M-ary pulse order time hopping multiple access ultra wideband (PO-THMA UWB) system using modified Hermite polynomial (MHP). The MHP pulses have a mutually orthogonal property between different ordered pulses and that property makes simultaneous transmission at the same time slot regardless of collision in the THMA-UWB system. Therefore, we derive the cross-correlation furlction of MHP pulses and analyze the BER of the proposed system and show that the BER performance and the transmission capacity are improved dramatically when compared with those of conventional THMA-UWB system.

이 논문은 초광대역(Ultra WideBand: UWB) 임펄스 라디오(Impulse Radio: IR) 시스템에서 Modified Hermite Polynomial(MHP) 펄스들을 이용한 M진 펄스차수 시간도약 다중접속(Pulse Order-Time Hopping-Multiple Access: PO-THMA) 방법을 제안하고, 시스템의 비트오류율(Bit Error Rate: BER)을 분석한다. 제안하는 다중접속 방법은 상호간에 직교성을 가지는 MHP 펄스들을 사용하여 동일한 칩 시간에 펄스들이 존재하더라도 섞임 없이 구분해 낼 수 있는 성질을 이용하여 다중 접속용량 증가시킬 수 있다. 제안하는 시스템의 성능 분석을 위해 데이터 전송에 사용한 MHP 펄스들의 상호 상관함수를 구하고, 기존이 다중접속 방식과 비교하여 데이터 전송율과 BER 성능이 개선됨을 보인다.

Keywords

References

  1. Moe Z. Win and R. A. Schok, "Impulse Radio: How it works," IEEE comm. letter, Vol.2, pp.36-38. Feb. 1998 https://doi.org/10.1109/4234.660796
  2. M. A. 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, Apr. 2000 https://doi.org/10.1109/26.843135
  3. Y. A. Shin, "Recent Advances in UWB Technologies," Tutorial. 한국통신학회 Jul. 2003
  4. G. Durisi and S. Benedetto, "Performance evaluation and comparison of different modulation schemes for UWB multi-access systems," Proc. IEEE Int. Conf. Comm., Anchorage, AK, pp.2187-2191, May 2003
  5. J. Zhang, T. D. Abhayapala, and R. A. Kennedy, "Performance of ultra-wideband correlator receiver using Gaussian monocycles," IEEE Int. Conf. Communications, Anchorage, AK, pp.2192-2196, May 2003
  6. H. Zhang and T. A. Gulliver, "Biorthogonal pulse position modulation for time hopping multiple-access UWB communications," IEEE Trans. Wireless Commun., Vol.4, No.3, pp.1154-1162, May 2005 https://doi.org/10.1109/TWC.2005.846969
  7. M. Ghavami, L. B. Michael and R. Kohno "Hermite function based Orthogonal Pulse for UWB Communications," Proc. Wireless Personal Multimedia Conference, Aalbog, Denmark, pp.437-440, Sep. 2001
  8. L. B. Michael, M. Ghavami, and R. Kohno, "Multiple pulse generator for ultra-wideband communication using Hermite Polynomial based orthogonal pulses," Proc. 2002 IEEE Conf. on Ultra Wideband Systems and Technologies, Baltimore, MA, USA, May 2002
  9. M. G. Di Benedetto, G. Giancola, "Understanding Ultra WideBand Radio Fundamentals," Prentice Hall. 2004
  10. L. E. Miller, "Autocorrelation functions for Hermite polynomial ultra-wideband pulses," IEE Electronics Letters, Vol.39. No.11, pp.870-871, May 2003 https://doi.org/10.1049/el:20030550
  11. G. Durisi and G. Romano, "On the validity of Gaussian approximation to characterize the multiuser capacity of UWB TH PPM," Proc. IEEE Conf. Ultra Wideband Systems and Technology, pp.157-161, 2002
  12. J. H. Hwang, S. C. Kim, S. Yoon, B. Kang, and J. S. Park, "Performance Analysis of PO-THMA UWB System Using Mutually Orthogonal MHP Pulses," IEEE Trans. Consumer Electron., Vol.53, No.1, pp.39-45. Feb. 2007 https://doi.org/10.1109/TCE.2007.339499
  13. J. G. Proakis, Digital communication, forth edition. McGraw-Hill Int. Edition 2000