The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Performance of Decorrelator for Multirate Multicarrier DS/CDMA System

다중전송률 다중반송파 DS/CDMA 시스템을 위한 비상관기의 성능

  • Received : 2010.06.07
  • Accepted : 2010.12.15
  • Published : 2010.12.31
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Abstract

In this paper, a performance of a decorrelating detector for a multirate MC(multi-carrier) DS/CDMA system is analyzed and simulated in a frequency selective Rayleigh fading channel. The performance is compared with that of single rate MC-DS/CDMA system in term of bit error probability. Variable Spreading Length (VSL) is employed for MC-DS/CDMA system as multirate transmission scheme. From simulation result, it is shown that Decorrelator for multirate MC-DS/CDMA achieves high BER performance as well as that of single rate case.

본 논문은 다중전송률 다중사용자 다중반송파 DS/CDMA 시스템에 대한 역상관 검출기의 특성을 분석하고, 주파수 선택 레일레이 페이딩 체널에서 시뮬레이션하였다. 비트 오류 확률에 대한 성능을 단일 전송률 MC-DS/CDMA 시스템과 비교하였다. 다중전송률 송신구조로써 가변확산길이가 MC-DS/CDMA 시스템에 사용되었다. 시뮬레이션 결과, 다중전송률 MC-DS/CDMA의 역상관기는 단일 전송률 시스템에 비하여 높은 BER 성능을 나타내었다.

Keywords

References

  1. W. Choi, C. Lee, and J. Y. Kim, "Multiuser detection with multicarrier transmission for a DS/CDMA system in a multipath fading channel" in Proc. of IEEE PIMRC '2000, vol. 1, pp. 124-128, Sep. 2000.
  2. S. Moshavi, "Multi-user detection for DS/CDMA communications," IEEE Commun. Mag., vol. 34, no.10, pp.124-136, Oct. 1996. https://doi.org/10.1109/35.544334
  3. S. Kondo and L.B. Milstein, "Performance of multicarrier DS CDMA systems," IEEE Trans. Commun., vol.44, no.2, 1996, pp.238-246. https://doi.org/10.1109/26.486616
  4. J. Y. Kim and J. H. Lee, "Performance of a multirate DS/CDMA system with multiuser detection," IEEE MoMuC '97, Seoul, Korea, Sep. 1997, pp.138-142.
  5. S. Verdu, Multiuser Detection, 1st ed., Cambridge University Press, 1998.
  6. S. Verdu, "Minimum Probability of Error for Asynchronous Gaussian Multiple-Access Channels," IEEE Trans. Inform. Theory, vol. 32, no. 1, pp. 85-96, Jan. 1986. https://doi.org/10.1109/TIT.1986.1057121
  7. R. Lupas and S. Verdu, "Near-far resistance of multiuser detectors in asynchronous channel," IEEE Trans. Commun., vol. 38, no. 4, pp. 496-508, Apr. 1990. https://doi.org/10.1109/26.52661
  8. U. Fawer and B. Aazhang, "A multiuser receiver for code division multiple access communications over multipath channels," IEEE Trans. Commun., vol. 43, no. 2, pp. 1556-1565, Feb./Mar./Apr. 1995. https://doi.org/10.1109/26.380205
  9. M. K. Varanasi and B. Aazhang, "Multistage detection in asynchronous code division multiple access communications," IEEE Trans. Commun., vol. 38, no. 4, pp. 509-519, Apr. 1990. https://doi.org/10.1109/26.52662
  10. T. Ottosson and A. Svensson, "Multi-rate schemes in DS/CDMA systems," in Proc. of IEEE VTC , vol. 2, pp. 1006-1010, Chicago, IL, U.S.A., July 1995.
  11. S. Kondo and L. B. Milstein, "On the use of multicarrier direct sequence spread spectrum systems," in Proc. of IEEE MILCOM 93, pp. 52-56, Boston, MA, Oct. 1993.
  12. M. Juntti, "System concept comparisons for multirate CDMA with multiuser detection," in Proc. of IEEE VTC, vol. 1, pp. 36-40, 1998.